Though it is just a back numer , it is very important to me.

虽然这只是一本过期杂志，但它对我来说非常重要。

Next up are the definitions of numer and denom, respectively.

接下来分别是numer和denom的定义。

The plate numer is subject to the physical performance of the flow, pressur drop and temperature.

板片数量由流速流体的物理属性、压降和温度程序决定。