它还利用超声波来探测物体的大小和形状。
Another thing it uses ultrasound to detect is the size and shape of objects.
使用特殊的三维成像软件则能可以显示地下物体的大小和形状。
Special 3-d-imaging software helps visualize the size and shape of the objects.
引力的拉力取决于物体的大小,或者更确切地说,取决于质量。
The pull of gravity depends upon size, or, more accurate ly, upon mass.
Why should the amount by which you're attracted to the Earth be also a measure of how much you hate acceleration?
为什么物体受地球引力的大小,恰好能衡量物体加速的难易程度呢
Other is gravitational mass, which is the measure of how much you're attracted to the Earth.
另一个是引力质量,它可以用来衡量地球对物体引力的大小
Newtons acting on 2 kg, gives you an acceleration of 2.
牛的力作用在 2 千克的物体上,那么其加速度大小就是 2
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