... contrarotation 反向旋转 contrary sign 异号 contrary-turning propeller 对转推进器 ...
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绝缘粉末通过金属管导时，两者带上等值异号电荷。
When the insulated powder pass through the metalline pipe, both generate electrites of egualize in magnitude and opposite symbol.
结果指出，在紧靠裂纹顶端的滑移面上出现和裂纹位错异号的位错。
It is found that opposite sign dislocations appear on the slip plane immediately ahead of the crack tip.
1976人们对于异星生命的存在感到很悲观。 当年海盗一号飞行器登录火星，用它伸出的机械臂抓起了一掊红色的火星尘土并进行了化学测试。
Things were not looking so good for alien life in 1976, after the Viking I spacecraft landed on Mars, stretched out its robotic arm, and gathered up a fist-size pile of red dirt for chemical testing.
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