断裂点

In this paper, the fracture behavior of nitramine propellant under different temperatures and crack lengthes has been studied through three methods, i.

本文用紧凑拉伸、三点弯曲和单边裂纹拉伸等三种实验方法对硝胺火药在不同温度和不同裂纹深度下的断裂性能进行了研究。

The diblock copolymer of styrene and chloromethyl-4-vinyl-benzene was obtained by means of reverse addition fragmentation chain transfer reaction living free radical polymerization. The chloromethyl groups in PS-b-PCVB were transformed into azidomethyl groups, and then into 1,2,3-triazol groups via click chemistry. The diblobk copolymer containing 1,2,3-triazol groups was thus obtained. The results from NMR spectra suggested a complete transformation from chloromethyl groups to triazol groups.

通过可逆加成－断裂链转移聚合活性自由基聚合方法制备了聚（苯乙烯－b-对氯亚甲基苯乙烯）二嵌段共聚物，其中的氯亚甲基侧基经叠氮化反应后与丙炔醇进行点击反应，最终得到了含有1，2，3-三氮唑官能团的聚苯乙烯二嵌段共聚物，核磁共振谱表征结果证明，PS-b-PCVB中的氯亚甲基完全转变成了1，2，3-三氮唑基团。

Breaking energy Strength concrete Precasting crack Bending at three points

断裂能；强度；预制裂缝；三点弯曲

It starts at a point and then the rupture propagates along the fault at around 2 kilometers or so per second.

地震开始于一个点，然后断裂会以约2公里每秒的速度沿着断层继续下去。

Potassium Dihydrogen Phosphate is a non-linear optical material used for laser frequency conversion and electrooptic modulators,it is typically machined by single point diamond turning.

压痕和刻划实验是测量材料弹性、塑性和断裂行为的最简单方法，磷酸二氢钾作为优质的非线性光学材料，常用作光学频率转换器件和电光开关元件，一般采用单点金刚石车削的方法加工此类零件。

Their typical examples include the flight directions of birds from points of release, orientations of fracture planes, the directional movement of animals in response to stimuli, directions of wind and ocean currents, and biorhythms.

鸟在放飞点的飞行方向，地层断裂面的走向，动物在受到刺激时产生的定向运动反应，风向和洋流的方向以及生物节律等都是典型的例子。

Department can not repair welding welding Welding and machining should be cleared of the original; 3, remove the screw, loop cleaning, replacement of defective parts, ground sealing and connecting seat seal surface, re-assembly.

五、关闭件脱落产生泄漏：原因： 1、操作不良，使关闭件卡死或超过上死点，连接处损坏断裂； 2、关闭件连接不牢固，松劲而脱落； 3、选用连接件材质不对，经不起介质的腐蚀和机械的磨损。

The reason that the internal defects little occur at the center points and fissure takes an annular form during three-roll rolling was expounded based on the state of stress and strain at the center of rolled pieces.

根据轧件内部的应力应变状态，阐述了三辊轧制轧件中心点缺陷产生可能性较小和断裂呈环向裂纹的原因。

To solve the problem, a three-point bending test was put forward.

中文摘要：针对以Q450NQR1钢为基板、B级钢为腹板模拟实际工装位置，疲劳断裂与货车运营实际工况不符的问题，提出以B级钢为基板、Q450NQR1钢为腹板进行三点弯曲疲劳试验，诱使疲劳裂纹向B级钢侧扩展，研究了MAG气体保护焊B级钢/Q450NQR1钢搭接接头的疲劳性能。

The result shows that Chenjiazhuang Salient is not the unique Archaean strata,fault,low-resistivity and low-density bodies exist inside the salient.

认为陈家庄凸起并非是单一的太古界地层，其内部存在断裂和低阻、低密度体；根据地震资料解释的东营凹陷古生界顶面最深点应向北偏移。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。