撞击的

The experimental results reveal that there is no apparent difference in the frequency of sounds generated by the friction and collision between two stones, although the sounds may differ in pressure.

由实验结果可知，摩擦与撞击这两种不同的运动机制所产生的地声音频讯号，除声压强度上会有显著的差异之外，其在频谱上并无太大的差异性存在，这可能是因为摩擦运动基本上也可视其为无数个小撞击运动，因此其所产生之地声声纹基本上大同小异。

In the case of the demise of the dinosaurs, scientists have a smoking gun, an impact crater that suggests dinosaurs were wiped out as the result of a large asteroid crashing into the planet.

至於灭亡的恐龙，科学家们有一个冒烟的枪，一个撞击坑表明恐龙的灭绝是由於一个大的小行星撞击地球。

Likewise, it would appear a reasonable hypothesis that the Earth has also been subjected to meteoroid bombardment in the past, and that very large bodies struck the Earth early in its geological history.

同样地，地球也经历过陨石的撞击就显得是一个合理的假设，而且在他的早期地质年代里有非常大的星体撞击过地球。

The thermal safety ,friction sensitivity and impact sensitivity of the pyrotechnics with modified and unmodified potassium chlorate(KClO3) were tested and compared.

为了研究含改性氯酸钾的烟火药剂的安全性，采用绝热加速量热仪、撞击和摩擦感度仪等，对由改性前后氯酸钾组成的烟火药剂的热安全性和摩擦感度、撞击感度进行了对比测试。

A game played on a rectangular cloth-covered table with raised cushioned edges, in which a cue is used to hit three small, hard balls against one another or the side cushions of the table.

台球是一种在用布覆盖的四边凸起的长方形桌子上进行的游戏，用弹子球棒使三个小硬球相互撞击或撞击桌边。

A game played on a rectangular cloth-covered table with raised cushioned edges, in which a cue is used to hit three small, hard balls against one another or the side cushions of the table.

台球一种在用布覆盖的四边凸起的长方形桌子上进行的游戏，用弹子球棒使三个小硬球相互撞击或撞击桌边

The parameters and methods for evaluating bird impact damage of fan/compressor blade are discussed.

结合发动机设计准则与设计规范的要求，提出了2个用于评定叶片损伤能力的叶片变形损伤参数和塑性应变损伤参数；经对模型叶片在不同撞击位置进行的鸟撞击损伤评定，证明方法可

The results are:(1) Samples without straight radial grain have more hits and increasing faster than samples with straight radial grain, but before fracture hits count is not much different.

最后得出以下结论：(1)径向纹理不通直的试件比通直的声发射撞击数要多，而且增加的趋势较快，但是在试件断裂前，声发射撞击数相差不大。

More than 200 people have been killed worldwide as a result of wildlife strikes with aircraft since 1988, according to Bird Strike Committee USA, and more than 5,000 bird strikes were reported by the U.S.

据美国飞鸟撞击协会提供的数据显示，自从1988年以来，全球由于野生动物与飞行器相撞已导致超过200人遇难，另据美国空军的报道仅2007年一年里就发生了超过5000次的飞鸟撞击事件。

The "center of percussion" is the real sweet spot.

有趣的事实是：撞击点越高，撞击时对拍子的重心产生的力就越小。

It seems likely that Kraft will return with a better offer.

看起来卡夫要重新考虑一个更好的出价了。

But he'd rather burn off my feelers and watch me squirm.

可他却放任那个家伙对我为所欲为！