1 Self-threading or sheet metal screws may be used if threads are not stripped when the screw is tightened with a torque of 3.39 N·m (30 lb·in) and if the part or the assembly supported by the screw withstands for 1 min a force equal to four times the mass of the part or assembly, applied in a direction coincident with the axis of the screw.

測試方法：用3.39N.m（30lb.in）的扭力扭緊螺絲亚洲色图,清纯唯美，并在裝配表面的螺絲軸向施加于四倍于裝配物重量一级黄色免费录像片，螺蚊應(yīng)不受破壞。本文由tinson2008在安規(guī)網(wǎng)發(fā)表婷婷五月激情丁香，如果提示附件不存在欧美456视频，點(diǎn)我進(jìn)入備份站下載！

The easy hydrolytic degradation polyester was synthesized in the batch reaction vessel of 6 m 3. Hydrolytical properties of EHDPET can be controlled at will by selecting suitable hydrolytic conditions. By spinning EHDPET and PET (or PA6) in the mass ratio of 15~25/85~75 on Hills bicomponent spinning equipment, sea\|island bicomponent fibers which have good physicomechanical properties and processing performance were obtained.

在6m3 間歇式反應(yīng)裝置上合成了易水解聚酯黄色网站免费大全高，選擇適宜條件日翰伊人一区二区，EHDPET 的水解性能可以得到隨意控制，將合成的EHDPET 與PET以 15～25／85～75 質(zhì)量比在 Hills 雙組分復(fù)合紡絲機(jī)上進(jìn)行復(fù)合紡絲日韩精品妓女网页在线观看视频免费，得到以EHDPET為海組分国标精品黄片一区，以PET（或PA6）為島組分的海－島型復(fù)合纖維；該復(fù)合纖維物理性能良好樱花视频在线国产，用該復(fù)合纖維織造的機(jī)織物和針織物超碰免费公开在线激情，其紡織加工性能均良好。

Twenty-eight prototrophic revertants of the tryptophan auxotrophs were obtained through spotaneous back mutation from colonies grown on synthetic medium plates or nodules of plants. Most of the revertants have resumed the nodulation abilities and enhanced nitrogen fixation activities as evidenced by darker green color, higher dry weight and more nitrogen contents in shoot than those of the wild type strain 8-1-4A did in pot experiments. However, noodulation abilities decreased to some extent and no significant differences were found in the mass of nodules compared with the parent strain.

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That cold accretion called the world ,which,so terrible in the mass,is so unformidable,even pitiable,in its unitsThomas Hardy.

那個(gè)被稱為地球的沖積而成的寒冷球體日本在线免费不卡视频，整體是如此令人生懼，各部分又是那么懦弱甚至令人生憐国产激情全集在线观看视频。

That cold accretion called the world,which,so terrible in the mass,is so unformidable,even pitiable,in its un its Thomas Hardy.

那個(gè)被稱為地球的沖積而成的寒冷球體在线日本高清日本免费网站，整體是如此令人生懼，各部分又是那么懦弱甚至令人生憐国产一品二品三品色网站免费。

That cold accretion called the world,which,so terrible in the mass,is so unformidable,even pitiable,in its units Thomas Hardy.

那個(gè)被稱為地球的沖積而成的寒冷球體亚洲一级aⅴ无码毛片不卡，整體是如此令人生懼，各部分又是那么懦弱甚至令人生憐。

She had no fear of the shadows; her sole idea seemed to be to shun mankind - or rather that cold accretion called the world, which, so terrible in the mass, is so unformidable, even pitiable, in its units.

她并不害怕黑夜欧美黑大粗硬；她唯一的念頭就是避開人類——或者不如說是被稱作世界的冷酷的生命群體国产一级欧美黑人一级，它作為整體是如此令人可怕，而作為個(gè)體卻又不那樣令人害怕超碰天天干人妻，甚至是可憐的。

She had no fear of the shadows; her sole idea seemed to be to shun mankind--or rather that cold accretion called the world, which, so terrible in the mass, is so unformidable, even pitiable, in its units.

她不畏懼陰暗欧美视频3p；她唯一的念頭是回避人類1313午夜精品，或者那個(gè)被稱作&人世&的群體。那東西集合起來多么陰森可怖大香线蕉视频观看国产，可是每個(gè)個(gè)體都并不可怕在线看片y，有時(shí)甚至是可憐的。

These forgeries,if used in the mass media or courts of law, can have an important impact on this society.

如果這些篡改圖用在媒體或法律上人人人摸人人操，對社會(huì)將造成很大的影響欧美一级情欲视频在线播放不，所以檢測數(shù)字篡改變成了一個(gè)非常嚴(yán)峻的問題。

According to appleton, 25- nm standards can be inculcated in the mass production for three years.

據(jù)阿爾普国产成人动作片福利姬在线播放、25納米水平欧美大黄8岁进入内射，可以批量生產(chǎn)牙牙學(xué)語三年。