无形损耗 meaning in English

intangible wear and tear
invisible depreciation
invisible waste
moral depreciation
moral wear
nonphysical wear

For the time being we are concerned only with the question of how much we have to pay for obsolescence cost
这里我们仅关心我们要有多少无形损耗的问题。
As we all know , the back - pressure valve ( also called evaporating pressure regulator ) is often used to regulate the evaporating temperature of every high - temperature refrigeratory in the system containing many different temperatures but single engine of the ship . but it is neglected that the energy of the system is lost and the efficiency of the system becomes low
众所周知船舶单机多库(简称为高、低温冷库)系统中，常用背压阀(蒸发压力调节阀)来调节各高温库的蒸发温度，但忽略了系统无形损耗的能量，效率也有所下降。