To give the definition of the mass concrete and to concrete\'s cracks together with practical meanings of control ,and give a brief review on the research in the field at home and abroad, at last, methods to control temperature crack of the mass concrete from several aspects such as design measures,concrets material, construction schedules.etc are summed up; To explain the physical mechanics of the concrete and computing methods-Difference Method and Finite Element Method, and illustrate the application of their specific methods repectively;Several temperature factors that can influence the temperature stress of mass concrete baseplate are analyzed. The influence degree of temperature factor can be got through the ANSYS simulation computation the control of temperature can control the temperature stress, consequently control the temperature crack of mass concert baseplate; through the influence of the crack resistance ability of mass concrete baseplate which takes the reinforcement as a part is analyzed. By ANSYS simulation, the best suited volume ratio of reinforcement is found out, at same time the layout of reinforcement with the same volume ratio can also affect the resistance ability of mass concrete baseplate. Sum up of above analysis, anti-crack function of steel bar in early mass concrete baseplate is obvious, so it\'s necessary to consider beneficial effect of construction steel bar in research of temperature control on mass concrete baseplate.

本文先容了大體積混凝土及混凝土裂縫的基本概念毛毛黄色A片，對國內(nèi)外在這個領(lǐng)域里的研究現(xiàn)狀作了扼要敘述，并從結(jié)構(gòu)設(shè)計欧美黄色插插、混凝土材質(zhì)亚洲A级黄片在线、施工措施等方面總結(jié)了大體積混凝土溫度裂縫控制的方法及防止措施；闡述了混凝土的基本物理力學(xué)性能人妻AV无码系列专区移动可看，總結(jié)了大體積混凝土溫度計算的方法——差分法和有限元法18禁黄网站禁片无遮挡，并分別舉例說明其具體應(yīng)用的方法；分析了影響大體積混凝土底板溫度應(yīng)力的幾種溫度因素在线资源av网站，利用ANSYS模擬計算永久黄网站色视频免费大全91，得出了每種因素的影響程度，通過分析提出了在這幾種溫度影響因素下如何通過控制溫度以達到控制溫度應(yīng)力從而來控制裂縫的具體建議欧美日韩一级特黄大片在线直播；針對大體積混凝土基礎(chǔ)底板中配筋的不同對混凝土底板抗裂能力的影響不同青青青草视，利用ANSYS進行模擬分析，得出底板中最合適的體積配筋率超碰在人人操，同時分析了在相同體積配筋率下鋼筋的具體布置對大體積混凝土基礎(chǔ)底板抗裂能力的影響精品在线精品视频，分析表明，配置鋼筋對混凝土結(jié)構(gòu)的開裂阻止作用明顯99久久免费看,视频，在研究大體積混凝土溫度裂縫題目時黄色高清无码在线，要考慮鋼筋在其中的有利作用。

So, the average density of spatial energy of spatial radius is the length of Planck of relative time-space cosmic energy follow the rise and fall of quantum spatial measurement, at original cosmic time-space set out, from the structure-energy of mass 16.38×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 8.19×10-71 N · m, come to do not exceed the structure-energy of mass 32.76×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 24.57×10-71 N · m, not smaller the structure-energy of mass 21.84×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 13.65×10-71 N · m, come to do not symmetrically gradually belong to stabilization thus at reductively fluctuate, not can reversely strides across reach the stable state of structure-energy mass 24.57×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 16.38×10-71 N · m maintain unchanging.

所以中文字幕在线更新资源站，宇宙能量的相對時空空間的半徑為普朗克長度的空間的能量平均密度隨宇稱量子的漲與落欧洲性爱一级二级网站视频，在原初的宇宙時空啟動特级毛视频免费观看，從16.38×10-71N · m 質(zhì)量結(jié)構(gòu)能對于8.19×10-71N · m 空間能與8.19×10-71N · m 質(zhì)能，成不大于32.76×10-71N · m 質(zhì)量結(jié)構(gòu)能對于8.19×10-71N · m 空間能與24.57×10-71N · m 質(zhì)能午夜熟女毛片，不小于21.84×10-71N · m 質(zhì)量結(jié)構(gòu)能對于8.19×10-71N · m 空間能與13.65×10-71N · m 質(zhì)能久青草性生活一级片，成不對稱地遞歸于穩(wěn)定而在縮小地波動，不可逆地跨越到24.57×10-71N · m 質(zhì)量結(jié)構(gòu)能對于8.19×10-71N · m 空間能與16.38×10-71N · m 質(zhì)能的穩(wěn)定狀態(tài)保持不變曰韩视频第一页。

Age, body mass index and the main outcomes of PSG were compared between the two groups. ResultsAll 230 patients had an oropharynx obstruction, of them 120 had a retrolingual obstruction, 105 had a nasal obstruction and 53 had a nasal obstruction and retrolingual obstruction.

方法回顧分析230例OSAHS患者的上氣道阻塞情況99黄色视频在线观看，并根據(jù)是否存在舌根平面阻塞將患者分為兩組，比較年齡亚洲欧美啊啊啊啊久久久，體質(zhì)指數(shù)（body mass index欧美一级A片免费不卡全部完曰久， BMI）及PSG主要監(jiān)測指標(biāo)。

This paper determined the olfactory respones of Tetranychus viennensis to different plants odors with "Y" olfactometer and petri-dish, volatiles from leaves of different plants were absorbed with SPME and analyzed with GC-MS (gas chromatograph-mass spectrometer). At the same time, the effects of different host plants on the development of Tetranychus viennensis were determined by means of the leaf-dish rearing method , in addition, the contents of some chemicals in the leaves of different plants were also determined.

本文用&Y&形嗅覺儀法和培養(yǎng)皿法測試了山楂葉螨Tetranychus viennenis Zacher對不同植物氣味物質(zhì)的嗅覺反應(yīng)欧美操屄，并利用固相微萃取SPME吸附国产乱子伦牲交视频、用氣相色譜—質(zhì)譜聯(lián)用儀GC-MS(gas chromatograph-mass spectrometer)分析了不同植物葉片的揮發(fā)性物質(zhì)成分：同時采用海綿水盤法飼養(yǎng)山楂葉螨，研究了不同植物對山楂葉螨生長發(fā)育的影響外国熟妇性交，并測定了不同植物葉片中一些生化物質(zhì)的相對含量城中村嫖娼吊带。

The L2 glass with 30 mass% Al2O3 filler (L30A) can be fully densified at 800oC in 1 h and devitrified at 850oC for 10 min. The sintering scheme has been optimized to achieve limit dissolution of Al2O3 grain and crystallization of equi-axial LaBO3 and flaky LaAl2B3O9 crystals. The final matrix has limited glassy phase.

L2玻璃添加30 mass%的氧化鋁（簡稱L30A）於800oC持溫一小時并於850oC作十分鐘的結(jié)晶處理可達完全致密，整體的燒結(jié)流程設(shè)計亦已最佳化免费看黄网址国产精品，微結(jié)構(gòu)觀察中可發(fā)現(xiàn)等軸LaBO3及片狀LaAl2B3O9之結(jié)晶體日本黄色美女网站，其燒結(jié)后之基地僅殘存有限的玻璃相。

Preferential dissolution of α phase for specimens processed less than 12 hrs were revealed by using ICP-MS (inductively coupled plasma-mass spectroscopy). Hydrides having precipitated in the α-phase at the near surface peeled off into the electrolyte, and thus resulted in reduced HUE for specimens having experienced longer charging periods. In order to increase HUE, the hydrogenation promoter, Na2S2O35H2O, was added into the electrolyte to see the effect on the hydrogen absorption.

感應(yīng)耦合電漿質(zhì)譜分析術(shù)(inductively coupled plasma-mass spectroscopy九九草在线乱码av； ICP-MS)分析發(fā)現(xiàn)午夜免费看三级片，滲氫前一階段（12小時）鋁元素有較明顯之溶釋現(xiàn)象，此一現(xiàn)象肇因於滲氫作用使近表面層α-相中析出之氫化物體積逐漸擴大膨脹欧美激情視頻，最后剝落而溶於硫酸水溶液三级片91韩国自拍，也因此造成長時間之滲氫效率未隨滲氫時間增加而增加。

In this paper, an approach to handling this problem is proposed. Before adopting the Dempsters rule to combine belief functions, the assignments of mass functions are pretreated by the disturbance of ignorance.

提出一種新的沖突證據(jù)合成方法女人与拘猛交69，即在Dempster合成之前精品偷拍第50页视频，基于未知擾動對mass函數(shù)進行預(yù)處理，并通過預(yù)處理來解決標(biāo)準(zhǔn)化問題欧美y。

The term combines the old English words for "loaf" and the Christian"mass", and in early church Lammas was the festival of the wheat harvest .

它是由兩個英語單詞結(jié)合而成的：loaf和mass欧美亚洲欧美亚洲日韩中文视频。在早期教會里，&收獲節(jié)&是慶祝收割麥子的節(jié)日五月婷婷超碰在线。

We have synthesized a series of 4,4′ perfluoro-alkylated bipyridine ligands[4,4′- bis(RfCH2OCH2)-2,2′-bipyridine , Rf=HC4F8(1a), HC8F16(1b), C3F7(1c) and C10F21 (1d)] by nucleophilic substitution reactions. The reaction of fluorinated alkoxide on 4,4′-bis-2,2′-bipyridine results in the systheses of these four fluorinated ligands. These reactions are high yieldings and purification is easy. The structures are analyzed by GC-MASS麻豆国产香蕉久久精品、NMR、FT-IR etc.

中文摘要我們已合成出一系列在聯(lián)吡啶的4国产高清一级做a爱在线观看，4′位置有兩個氟化烷基側(cè)鏈的聯(lián)吡啶配位基[4，4′-bis(RfCH2OCH2)-218岁观看网站，2′-bipyridine 国产精品永久免费高清， Rf=HC4F8(1a)亚洲综合无码一区二区毛片， HC8F16(1b)， C3F7(1c)及C10F21(1d)]免费无码中文A级毛片，經(jīng)由親核取代反應(yīng)黄色一级毛片午夜直播，由4，4′-bis-299re视频2这里只有精品，2′-bipyridine反應(yīng)而得免费视频毛片，并具有不錯的產(chǎn)率，其純化也簡易可行久久久999免费视频，所合成之產(chǎn)物并可用GC-MASS欧美一级性爱免费看、NMR、FT-IR鑒定其化學(xué)結(jié)構(gòu)中文字幕第1页在线观看。

A rapid and simple method was developed for determination of aroma c omponents of apple wine by head space solide-phase microextraction coupled to capillary gas chromatography-mass spectrometry. Four paramete rs, including fiber coatings,extraction time,concentration of salt, and extraction temperature,were optimized. 2-Octanol was used as an inter nal standard for accuracy improvement.

以頂空固相微萃取法（Head Space Solid-Phase Micro-Extractions免费看无码特级毛片，HS-SPME）和氣相色譜質(zhì)譜（Gas Chromatgraphy-Mass Spectrometry，GC-MS）聯(lián)用女同性恋一区二区三。区，2-辛醇為內(nèi)標(biāo)欧美三级片中文字幕另类，研究了萃取頭、萃取時間乱色熟女一区二区、加鹽質(zhì)量濃度人人睡人人操人人干人人摸人人上、萃取溫度對蘋果酒中香氣物質(zhì)萃取的影響，優(yōu)化了分析條件婷婷色一区二区三区，建立了快速測定蘋果酒中香氣物質(zhì)的方法人人做人人爱人人操人人摸。