Applying variable pressure difference control can reduce throttle loss and achieve better energy-saving effect.

采用变压差控制可减少阀门的节流损失，具有更好的节能效果。

youdao

Presents an idea of variable pressure difference control, and analyses the electric saving effect of this control mode.

提出采用变压差调控的思路，并对其进行了节电比较。

youdao

A general scheme of a high pressure, variable flow and variable pressure aircraft intelligent hydraulic pump system is proposed in this paper.

提出了一种高压变流量变压力机载智能泵源系统的总体方案。

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Then the second derivative gives the change in entropy with respect to the variable that we're differentiating, with respect to which is either pressure or volume.

二阶导数给出熵,随着变量变化的情况，这些变量包括压强或者体积。

麻省理工公开课 - 热力学与动力学课程节选

Jordet's research, which includes the 35 Euro and World Cup matches that have been decided by penalty kicks since 1976, shows that no variable has a greater impact on scoring than the pressure.

WSJ: Euro 2012: An Apologia for the Penalty Kick Shootout

The draft legislation comes after months of debate and failed proposals, including retroactive cuts to investment agreements, a full halt in new subsidies for renewable energy projects and a variable tax rate on energy production that sank under pressure from wind and solar sectors already struggling to survive.

FORBES: Spain Moves to Calm Energy Storm

These high-penetration levels have put enormous pressure on the electric grid and created considerable doubts about the ability to interconnect more variable resources with the grid safely.

FORBES: Microgrids: Ten Clean Technologies Needed to Win the Next Naval War