And so they proceeded to invent the verge-and-foliot escapement, using a falling weight as with its Greek antecedents.
于是他们利用希腊早就使用的重锤着手发明了立轴横杆式擒纵机构。
The feature common to all of them is that, like the hand forging hammer, they utilize the energy of a falling weight to develop the pressure needed for shaping the metal.
就其一般特性而言，都象手工锻锤一样，它们均利用落重能量来产生金属成型所需的压力。
Their small size and low body weight soften the impact as they make contact with the ground after falling from great heights.
玲珑、轻盈的体态在接触地面时起到了很大的缓冲作用。
As an example, the greatly respected Greek philosopher Aristotle said that falling bodies fall at a speed proportional to their weight.
例如，深受人们尊重的希腊哲学家亚里士多德说过：落体的速度与其重量成正比。
Objects falling freely in a vacuum have the same rate of speed regardless of differences in size and weight.
重量不同、大小不同的物体在真空状态自由降落时速度一样。
Objects falling freely in a vacuum have the same rate of speed regardless of differences in size and weight.
重量不同、大小不同的物体在真空状态自由降落时速度一样。
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