It is also stressed that the orifice of the valve adopting linear, small gain form is suitable to reduce open-loop gain of the system and increase the stability.

文中还强调平衡阀的节流口宜采用线性小增益形式，以利于降低系统开环增益，提高稳定性。

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A type of valve, typically found on small-diameter pipework, that incorporates an orifice or flow-restriction device to control fluid flow.

一般用于小直径管道系统的一种阀。它包括一个用于控制流体流动的孔板或限流装置。

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Both the velocity of the sound-excited jet flow at a small circular orifice and the nonlinear impedance of the orifice are measured at high sound intensity.

在高声强下测量了微圆孔处声激发射流的速度和微圆孔的非线性声阻抗。

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For men, there have been ideas about using the penis as a natural orifice, but that's been dismissed because the point of entry is too small.

CNN: Use of natural openings may ease weight-loss surgery