Software is not mass produced.
软件不是大批量生产。
Also, because of their high cost, these test devices are not mass produced.
此外由于成本高,这些测试设备不是批量生产。
The closed system allows energy to transfer through the boundary but not mass.
闭系允许能量通过它的边界传递,但质量不行。
Another disappointment, he said, was not finding weapons of mass destruction in Iraq.
VOA: special.2009.01.17
The closed system allows energy to transfer through the boundary but not mass.
闭系允许能量通过它的边界传递,但质量不行。
If you look at the electrical force, the force of electricity, proton and electron or something, it's not proportional to the mass of either object.
如果你考察电作用力,即电现象产生的力,质子啊,电子啊,或者其它什么东西,这种力不和物体的质量成比例
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