However, the short shelf-life of yoghurts markedly restricts the development of dairy industry. Meanwhile, most factories in our country still can not predominate the cold chain which is the key process to maintain the quality of yoghurts.

但有一個(gè)制約酸奶行業(yè)發(fā)展的問(wèn)題，就是酸奶的保質(zhì)期太短国产AAAAAAAaA极黄片，由于冷鏈?zhǔn)撬崮唐房刂凶顬殛P(guān)鍵的環(huán)節(jié)黄视频在线一区，但是中國(guó)絕大多數(shù)廠家仍無(wú)法保證冷鏈控制，因此提高酸奶食用的安全性，避免增加冷鏈的運(yùn)輸成本91性爱自拍，開(kāi)發(fā)長(zhǎng)保質(zhì)期的酸奶日韩欧美国产三区，就成為值得研究的課題。

This article has studied HG70 steel and HS-70 welding wires weldings,the welded joint,welding quality,and the welding operational performance,in restricts under the welding condition,Uses HS-70 welding wires,Experiments the steel plate the weld joint stretch,degree of hardness and the resilience test result indicated that,HG70 steel and HS-70 welding wires weld joints have the low crack sensitivity,The welding quality is good,Its weld joint has the fine mechanics performance,thus explained they had the fine welding match.

0前言非調(diào)質(zhì)鋼具有優(yōu)良的使用性能和較低的生產(chǎn)成本激情无码一区二区，受到普遍重視人妻系列无码区久久精品。HG70鋼是武鋼開(kāi)發(fā)的工程結(jié)構(gòu)用鋼，具有強(qiáng)度高丝袜小黄片、低溫韌性好的特點(diǎn)免费三级影片。傳統(tǒng)高強(qiáng)度鋼一般碳當(dāng)量較高，焊接性能較差日本公妇在线视频。通過(guò)加入微量合金元素黄色视频在线观看免费AAA、采取新的控軋和調(diào)質(zhì)工藝，使得HG70鋼在提高強(qiáng)度的同時(shí)日韩三级亚洲三级，亦保持了較高的韌性和較低的碳當(dāng)量，因而從理論上講HG70應(yīng)具有較好的焊接性能亚洲a级黄片免费观看，但HG70鋼與HS-70焊絲的匹配情況精品国产经典三级在线看，還有待于分析驗(yàn)證。

Such a situation restricts not only the using value of research results but also the improvement of tribology.

這不僅限制了研究成果的實(shí)用價(jià)值91精品固产在线自产拍，而且也不利于摩擦學(xué)本身的進(jìn)一步發(fā)展和完善午夜福利综合网站。

As woody energy plant, Xanthoceras sorbifolia Bunge's seed yield is the main factor restricts its exploiture.

作為木本能源植物，文冠果的種子產(chǎn)量問(wèn)題是制約其大力開(kāi)發(fā)利用的主要因素99黄视频。

He now concentrates more on concerts and recitals and restricts his opera performances to one or two productions a year.

現(xiàn)在的他更重視演唱會(huì)和獨(dú)唱會(huì)的演出一级A片试看片，并將自己的歌劇演出限定在每年

He now concentrates more on concerts and recitals and restricts his opera performances to one or two productions a year.

現(xiàn)在的他更重視演唱會(huì)和獨(dú)唱會(huì)的演出，并將自己的歌劇演出限定在每年 1-2次最新日韩中文字幕国产。

The chief weapon in the arsenal of those fighting visual pollution here is a law that restricts the type,size,number and placemen of roadside advertising sign.

治理這里視覺(jué)污染的主要武器是通過(guò)一項(xiàng)法律一级男女牲交大片，對(duì)路旁廣告標(biāo)志的種類、尺寸大小AV大全在线观看麻豆、數(shù)量及放置地點(diǎn)予以限制日本一片色。

The net go toes the teaching to have already become a main current direction that develop of education; The teaching on the network have broken restricts in time and areas, share profits to use the resources advantage of the school, and is a kind of exploitation network to proceed teaching of gathering Voice\Images\Video data in the hand overing of integral whole with each other remote education Courseware ;User Can view the multi-media teaching by interview the hypertext pages ;Is a kind of method of sharing the information means, conveniently and quickly.

網(wǎng)上教學(xué)已成為教育發(fā)展的一個(gè)主流方向，充分利用學(xué)校的資源優(yōu)勢(shì)看美女免费操逼逼视频。網(wǎng)絡(luò)課件是一種利用網(wǎng)絡(luò)進(jìn)行教學(xué)的集語(yǔ)音＼圖像＼視頻數(shù)據(jù)于一體的交互遠(yuǎn)程課件又粗又大黄色艹逼；可以使用戶通過(guò)訪問(wèn)超文本頁(yè)面瀏覽多媒體教學(xué)；是一種方便迅速的共享信息手段德国三级片网站。

T his restricts the transition of reaction gas and causes bubble formation at the interface.

氧化產(chǎn)物與基體形成的致密層減緩了纖維的進(jìn)一步氧化国产黄色亚洲，并阻礙氧化氣體的排除，在界面形成大量氣泡欧美老熟妇性交杂。

Particularly in east Africa, the loss of land to national parks, game reserves, hunting blocks and conservation severely restricts pastoral mobility as much of this land either consists of critical dry- or wet-season grazing or cuts across seasonal migration routes.

特別是在非洲東部avttyazhou，國(guó)家公園、獵物繁殖保護(hù)區(qū)、狩獵區(qū)及保護(hù)區(qū)侵占了大量的土地女人18毛片在线播放，從而使游牧遷移受到了嚴(yán)重的限制www.szfbsz.com，因?yàn)檫@些土地不僅包括旱季和雨季主要的放牧區(qū)，而且還切斷了季節(jié)性遷移的必經(jīng)之路91性感视频在线。