He measured out the right quantity of medicine.
他配出了适当份量的药。
And this is a quantity that you know, right?
这时一个你已经知道的物理量，对吗？
But faults quantity is so large, finding a right method is a difficult thing.
但是机械设备故障数据量庞大，所以找出一种合适的故障诊断方法变的很困难。
If we save a sufficient quantity we can use it in the right way.
如果能积存充足，我们就能有效的用在正途。
If we save a sufficient quantity we can use it in the right way.
如果能积存充足，我们就能有效的用在正途。
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