By statistical analysis of numerous data obtained on the spot , a series of equations of increment of the steel tube wall when the tube is hollowly drawn is calculated in mathematical regression method .

為了較精確地預(yù)測(cè)空拔增壁量的大小亚州中文字幕操喷，根據(jù)某廠鋼管車間鋼管空拔時(shí)增壁量的實(shí)測(cè)數(shù)據(jù)

Methods and results We assume the carotid arterial wall is the elastic material so we can use the Hooke's law to analyze it. The experiment is based on the use of ultrasound B-mode imaging technique and the off-line image analysis. Elastic tube phantom experiments demonstrated the validity of the technique, providing the size of the tube within 3% of the actual values. The system was also tested in the common carotid arteries of 10 healthy males (age 23.6 y). According to the experimental result, it shows that our index is less variant than Peterson's elastic modulus. The results of and are and respectively.

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The residual gas pressure in an electron tube can be measured when the tube itself is operated as a hot cathode ionization gauge.Usually,its sensitivity K is determined by the method of gauge calibration.In this paper,author try to determine the sensitivity K by ca- lculation.The formulae for this purpose have be found out,and are used for both plate and cylindrical electrode systems.

把電子管接成熱陰極電離計(jì)的工作形式国产老年妇女BBW视频，用來(lái)測(cè)量管內(nèi)殘氣壓強(qiáng)時(shí)色黄色免费在线，其靈敏度如何計(jì)算的問(wèn)題在本文中作了討論，給出了平板形電極系統(tǒng)和圓柱形電極系統(tǒng)的靈敏度解析式欧美激情欧美激情欧美，對(duì)式中各量的計(jì)算作了詳細(xì)介紹www久久网；并指出四極管中電子在電離區(qū)的平均渡越次數(shù)的表示式與三極管中的完全不同。

The study of loading path optimization for tube hydroforming process;2. Based on some of the research results of the authors,the influence of the weld properties on tube hydroforming .

結(jié)合研究成果討論了焊縫材料性能對(duì)管材液壓成形規(guī)律的影響在线一区，闡述了焊縫管液壓成形的研究現(xiàn)狀及發(fā)展趨勢(shì)美女销魂国产一级A片，以及亟待解決的關(guān)鍵問(wèn)題。

The tube is rotated and fog droplets are collected by impaction on the tube.

管是旋轉(zhuǎn)和霧的液滴收集嵌塞就管裸体视频一区二区三区。

Due to imperfective technology management and construction negligence in consruction of concrete filled tube arch bridge, the inner of concrete have defects, hollow免费人成毛片在线视频、 fluff、 construction joint, and objectionable bonding between concrete and steel tube etc., therefore influence the integrity and mechanical performance of components in different degree.

由于鋼管混凝土拱橋在施工中往往因技術(shù)管理不善和施工疏忽好男人社区日本www，使混凝土材料內(nèi)部存在空洞、疏松久久久久毛片免费观看、施工縫2020av久久，以及混凝土與鋼管膠結(jié)不良等缺陷，從而不同程度地影響拱橋的整體性和力學(xué)性能亚洲日韩熟妇自拍图片。

The main causes were summarized as follows: 1 Patients psychological situation, accounting for 86.45%; 2 Impotency of the drainage tube because of postoperative hemorrhage, or because of tube folding, distortion or displacement, accounting for 45.15%; 3 Direct stimulation from drainage, accounting for 24.83%; 4 Temperature and speed of rinsing fluid, accounting for 15.0%; 5 Rise in abdominal pressure, accounting for 9.67%; and 6 Infection of bladder and urethra, accounting for 1.6%.

其主要原因有：(1)病人的心理狀況jjzzz国产，占86.45%；(2)術(shù)后出血?jiǎng)?chuàng)面組織脫落使引流管堵塞插入阴道视频、引流管折疊日韩精品一区二区熟女视频、扭曲、固定不妥當(dāng)53&视频在线，占45.15%亚洲第一精品在线；(3)導(dǎo)管刺激，占24.83%永久免费观看的毛片视频；(4)沖洗液的溫度肏屄视频在线免费观看、速度，占14.51%欧美毛揉揉视频在线观看；(5)腹壓增高亚洲精品国产欧美一二，占9.67%；(6)膀胱及尿道感染91夫妻自拍，占1.6%www.riav7。

Impotency of the drainage tube because of postoperative hemorrhage, or because of tube folding, distortion or displacement, accounting for 45.15

2術(shù)后出血?jiǎng)?chuàng)面組織脫落使引流管堵塞、引流管折疊色亚洲插插、扭曲免费人人插操摸、固定不妥當(dāng)免费A级不卡在线毛片，占45.15

This paper introduced some specialties of shell-tube-styled water-cooled condensers in marine air-conditioners, especially analyzed the differences of this kind of conducer from that on land in such aspects as the material of heat exchange tube, design structure, rot proof technics and the effect of incrustation, etc.

介紹船用空調(diào)裝置中殼管式水冷冷凝器的特點(diǎn)，著重分析了其冷凝器在換熱管材質(zhì)黄大色大片免费久久、設(shè)計(jì)結(jié)構(gòu)性av不卡在线、防腐工藝、水垢的影響等方面與一般陸用空調(diào)冷凝器的區(qū)別最近2019中文字幕在线www。

Results When HCV RNA serum is collected and reserved with disinfectant tube and infectant tube.

結(jié)果 用高壓消毒的離心管與未用高壓消毒的離心管收集中国一级特黄AAA片不卡顿、保存 HCV RNA血清，其陽(yáng)性檢出率有差異(P＜0.05)亚洲国产男男女女AV网址在线播放。