per quantity unit的意思|示意

Oxygen Transmission Rate (O2GTR): The quantity of oxygen gas passing through a unit area of the parallel surfaces of a plastic film per unit time under the conditions of test.

译文：氧气透过率（O2GTR）：在试验环境下，在单位时间内、单位面积上透过塑料薄膜两平行平面的氧气总量。

It is the rate of change in total utility per unit change in quantity and is not the utility of a marginal unit.

它是（商品）量的每单位变动带来的总效用变动率，而不是边际单位的效用。

If it is impossible to extend the time of steam injecting, the energy loss can be lessened by increasing the quantity of steam injected into well in per unit o...

如果不能延长注汽时间，则可以通过适当地增大单位时间的注汽量来降低能量损失。

The foam metal nickel has the advantage of good heat conductivity and the molten salt has the advantage of large heat storage quantity per unit weight or volume.

泡沫金属镍具有传热性能好，熔融盐具有蓄热量大、化学稳定性好等优点。

The theory considers aggregates of quantity demanded by buyers and quantity supplied by sellers at each possible price per unit.

该理论考虑，在每一个可能的单位价格上，买方总的需求量和买方总的供应量。

The bone mineral density (BMD) means the bony mineral quantity per unit area, which is an important index reflecting the metabolic status of the skeleton of human being.

骨密度是指骨单位面积所含的骨矿物量，它是反映人体骨骼代谢状况的一项重要指标。