All open Zero pressure drop.

全开状态零压降。

youdao

This is Lei-ring at zero pressure and under high pressure from the role of the reasons for sealing.

这就是蕾形圈在零压和高压下起密封作用的原因。

youdao

In the heat-supply system with distributed variable frequency pump, there exists a zero pressure difference, at which supply and return water pressures are equal.

分布式变频泵供热系统中存在零压差点，该点供回水压力相等。

youdao

But we've defined the enthalpy of those elements in their stable state at room temperature and pressure as zero, right?

但我们已经定义了这些,元素处于它们室温和常压下,最稳定的状态时的焓为零，对吧？

麻省理工公开课 - 热力学与动力学课程节选

What we define as zero is the enthalpy of every element in its natural state at room temperature and ambient pressure.

我们将零点定义为每种元素,在室温和正常大气压下,在其自然状态下的焓。

麻省理工公开课 - 热力学与动力学课程节选

This is just an equality. I have a constant pressure dH process. This term here is equal to zero.

这是一个等式，这是个恒压过程,这项等于零，这意味着。

麻省理工公开课 - 热力学与动力学课程节选

But Princeton Lyman, of the Council on Foreign Relations, says the net effect of all this pressure has been zero.

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Once deforestation falls to zero, which seems a plausible goal for 2030, the pressure for other forms of reduction will become even greater, and inaction now will make those reductions harder to achieve.

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