一些物体,比如一些旧的太空火箭或卫星碎片,在地球上以非常高的速度运动,速度如此之快,以至于一个非常小的碎片都能破坏重要的卫星或对宇航员造成危险。
Objects, like bits of old space rockets or satellites, move around the planet at very high speeds, so fast that even a very small piece can break important satellites or become dangerous to astronauts.
“潜入诱饵球中非常危险。海豚高速度冲入,总会发生危险的冲突。”他说。
Diving in a bait ball is very dangerous. Dolphins are charging at high speed and there is always danger of clash, "he said."
因此,计算筒体尤其是其危险部位的应力,预测其裂纹扩展速度或其使用寿命,具有非常重要的实际意义。
Accordingly, it is very important and significant to calculate the stress of the cylinder especially in the dangerous position, and to predict its crackle expanding speed and its surplus life.
因此,计算筒体尤其是其危险部位的应力,预测其裂纹扩展速度或其使用寿命,具有非常重要的实际意义。
Accordingly, it is very important and significant to calculate the stress of the cylinder especially in the dangerous position, and to predict its crackle expanding speed and its surplus life.
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