proportional sampling device 比例取样器 ; 按比例取样器 ; 比例取样装置
Proportional Add Device 比例式添加设备
proportional draw-off device 按比例选取石油产品的设备
Of an electronic circuit or device; having an output proportional to input; amplifying or attenuating all frequencies equally.
说明一种电子电路或器件，其输出和输入成比例，对所有的频率都。
The device mainly consists of connection flange, brake disc, braking caliper, bracing frame, force-multiplier pump, hydropneumatic pipeline and proportional control valve.
该装置主要由连接法兰、刹车盘、刹车钳、支撑架、加力泵、液气管线和比例控制阀等组成。
A proportional directional valve however will be controlled by an electrical device more like a dimmer switch.
一个比例方向阀是由与一个与调光开关非常象的电设备控制的。
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