节流机构使制冷从高温高压液体进入蒸发器。
Throttle body made from high temperature and high pressure liquid into the evaporator of refrigeration.
从质量流量传感器，那么，它是否去节流机构。
From mass flow sensor, then, does it goes to the throttle body.
接下来，进行了制冷系统节流机构和附属设备的选型。
Followed it, I select the model number throttle flap and appurtenance.
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