查询词典 knock head

That would knock the problem of stiction firmly on the head and, according to Dr Capasso, would open up the possibility of making things like frictionless ball-bearings.

这就使从根源上解决表面阻力问题成为可能。而根据Capasso博士的断言，这更敲开了制造诸如无摩擦轴承在内的理想设备的大门。

I'll knock her bloody head in.

我要把她该死的脑袋钉住

Shake your head and knock on wood.

摇摇你的头求求好运吧！！

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。