Firstly, we should prepare polyester glycol in order to prepare water-borne polyurethane emulsion used to wooden furniture. Polyester glycols having designed molecular weight of 1000 are synthesized by ethylene glycol and mixture of phthalic anhydride and adipic acid (morl radio =40:60)on condition that molar excess content of glycol is 15%, and high vacuum time is 8h.The produced polyester glycols having the same molecular weight as designed measure up to standard of material. And Water-borne polyurethane emulsion's hardness is better than others are produced by aliphatic polyester glycol.

為了制得性能優(yōu)越木器用水性聚氨酯乳液，首先我們從制備水性聚氨酯用的原料聚酯二元醇入手又大又长又租又爽的在线视频，我們設(shè)計(jì)了分子量為1000的聚酯二元醇欧美色欧美亚洲另类少妇，它使用鄰苯二甲酸酐和己二酸以摩爾比40：60混合后再與乙二醇反應(yīng)，反應(yīng)時(shí)醇的摩爾過量15%人人操,人人干,人人摸，真空時(shí)間8小時(shí)男女拍拍拍AAA毛片免费视频，所得的聚酯二元醇，在此條件下酸值基本上能符合用作聚氨酯原料的要求在线精品视频播放，所測得的分子量也與設(shè)計(jì)的分子量非常接近九九高清色综合免费视频在线观看，且用它來制得的水性聚氨酯乳液，其涂膜硬度丝袜巨乳电影，相對于單獨(dú)用脂肪族聚酯二元醇制備的水性聚氨酯的要優(yōu)超碰在线播放平台。

The method solves the problems better through adopting the following technical proposal that: the method takes the solid super acid consisting of the VIB group elements or the VIB group elements and the IVB group elements in the periodic table of elements and loaded on a symbiosis molecular sieve as catalyst, and naphtha with the component being C4-C10 as a raw material so as to carry out catalytic cracking reaction at a temperature of between 550 and 700 DEG C, under a pressure of between 0.01 and 0.5 MPa, at a reaction weight space velocity of between 0.1 and 4 hours and with the weight ratio between water and naphtha of between 0.5:1 and 4:1, thereby generating ethylene and propylene.

本發(fā)明涉及一種催化裂解制乙烯丙烯的方法，主要解決現(xiàn)有催化裂解制乙烯丙烯催化劑的使用溫度高在线a亚洲视频播放在线观看，活性低色呦呦在线国产亚洲，乙烯丙烯選擇性差的問題，本發(fā)明通過使用在共生分子篩上負(fù)載由元素周期表VIB族元素或VIB族元素和IVB族元素組成的固體超強(qiáng)酸作為催化劑www.麻豆视频.com，以組份為C 4 ～C 10 的石腦油為原料华人永久免费在线视频，在反應(yīng)溫度為550～700℃，反應(yīng)壓力為0.01～0.5MPa欧美一区精品视频一二区:，反應(yīng)重量空速為0.1～4小時(shí)-1 成年片色大黄全免费网站久久，水/石腦油重量比為0.5～4∶1的條件下，進(jìn)行催化裂解反應(yīng)生成乙烯丙烯的技術(shù)方案国产亚洲日韩在线人成，較好地解決了該問題欧美日韩精品福利在线观看，可用于催化裂解制乙烯丙烯的工業(yè)生產(chǎn)中。

There was no significant effects of Allium Mongolicum Regel and its extracts on IF and TBF of sheep as 20 kg body weight, but when the body weight growing at 30kg and 40kg it decreased IF and TBF significantly.

6沙蔥及其提取物對20kg體重綿羊IF和TBF沒有顯著影響国产成人无码调教AV，但可顯著降低30kg體重和40kg體重綿羊IF和TBF一级视频在线观看免费播放。

Results In pre-school children, tibial and radialis bone strength of obese group was worse than normal weight group, and the descending risk of bone strength in obese group was 6.87 and 2.24 times of normal children. Bone strength was not different in overweight and normal weight groups.

結(jié)果 學(xué)齡前肥胖兒童脛、橈骨骨強(qiáng)度均低于正常兒童欧美亚洲另类专区，脛https国产黄视免费、橈骨骨強(qiáng)度下降風(fēng)險(xiǎn)分別是正常兒童的6.87倍和2.24倍；超重組與正常組無差別日韩AV毛片精品簧片无码。

On the basis of analyzing the theory of the modeling of the propeller surface, this paper transforms the section data given by design to the data in Descartes coordinates. Interpolates the section data to get enough data and fits the blade surface with the least square method. A perfect C2 blade surface can be obtained by adjusting the deviation weight and fairing weight. According to the cylinder rough, two rough cut methods are preferred.

本論文在深入分析螺旋槳曲面成型原理的基礎(chǔ)上亚洲精品精品熟妇熟妇，將設(shè)計(jì)時(shí)給定的槳葉曲面的切面數(shù)據(jù)轉(zhuǎn)化為笛卡爾坐標(biāo)系中的坐標(biāo)，利用B樣條方法對截面數(shù)據(jù)點(diǎn)插值并加密少妇熟妇亚洲综合网站，得到足夠的數(shù)據(jù)點(diǎn)最新狼友网址，進(jìn)而利用最小二乘法擬合出槳葉曲面，通過調(diào)整偏離權(quán)和光順權(quán)得到了理想的二階連續(xù)的槳葉曲面A级毛片免费观。

Someone told me that I should only do weight training after I lose weight.

有人告訴我国产尤物视频在线，我只能做重量訓(xùn)練后，我減肥国产在线精品99一区。

Someone told me that I should only do weight training after I lose weight.

有人告訴我新久久黄色视频，我只能做減肥后，我的體能訓(xùn)練色喲哟。

Should I Only Do Weight Training After I Lose Weight?

我應(yīng)該只能做重量訓(xùn)練后久久综合一色综合久久小蛇，我失去重量？

To overcome target expansion, shape transformation and occas ional frame lost due to the missile phase motion of television guided bombs , a modified weightˉrelated function, t arget tracking strategy, template updating and modifiˉ cation, and tracking point positioning method as well as a predict ion method to solve the frame loss of target were proˉ posed. Based on this, an improved weightˉrelated matching tracking a lgorithm was realized.

針對電視制導(dǎo)炸彈中彈目相對運(yùn)動變化而導(dǎo)致的目標(biāo)尺度變化日韩在线vip福利电影网、幾何形變以及隨機(jī)因素造成的暫短丟幀現(xiàn)象18禁美女裸体黄色网站，文中對相關(guān)測度函數(shù)進(jìn)行了基于彈-目距離的中心加權(quán)修正，提出了相應(yīng)的模板更新與修正策略、基于線性預(yù)測的目標(biāo)位置的預(yù)測方法免费色网、跟蹤點(diǎn)的定位方法等多人操逼视频，在此基礎(chǔ)上，實(shí)現(xiàn)了基于加權(quán)相關(guān)的圖像匹配跟蹤算法国内特一级A片黄片。

In order to reduce the weight and get a good flight performance, the second generation MAV are made of balsa wood and the total weight are less than 10.96 grams. It can fly more than 40 meters by wireless control.

第二代飛行器亚洲一区免费观看，為達(dá)輕量化要求，機(jī)身及機(jī)翼骨架改以質(zhì)輕之巴沙木替代福利性视频，整體重量已低10.96克国产农村乱免费视频，此30公分翼展之第二代飛行器可成功飛行10秒。