施力;
A simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope.
有凹槽使得作用在绳子上的力量能够改变方向的轮状简单机械。
Standard unzipping techniques, where double-stranded DNA is unzipped through the application of a force at one end of the molecule, are shown to be inadequate.
标准的双链DNA通过分子一端的一个力的应用而解链的技术显示是不适合的。
Another important property of metals is that many of them are ductile, that is, their shape can be changed permanently by the application of a force without breaking.
金属的另一个重要性能是延展性,即可对金属施加压力使其永久改变形状而不破裂。
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