这个系统必须有安生的适用性。实验室人员使用一些易燃危险时,必须完全参照安全标准。
The system must be safe to use and no compromise to negotiate in term of safety standards for laboratory personnel with regard to those highly flammable, and hazardous gasses.
我首先计算-,在你们的参照组中,你们所坐的地方-,失去了多少能量,这是完全非弹性碰撞。
So I will first calculate-- in your frame of reference, - where you are sitting-- how much energy is lost when we have a completely inelastic collision.
所有收集上来的信息是完全相互参照的。
But I want to warn everybody ahead of time, I will not be following the textbook.
不过我先提个醒,我不会完全参照课本
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