bimetallic expansion steam trap的意思|示意

双金属膨胀式蒸汽疏水阀 双金属膨胀式蒸汽疏水阀 bimetallic expansion steam trap 压力平衡式恒温疏水阀 balanced pressure thermostatic trap ..

双金属膨胀式蒸汽 ... 液体膨胀式蒸汽 liquid expansion steam trap 双金属膨胀式蒸汽 bimetallic expansion steam trap 压力平衡式恒温 balanced pressure thermostatic trap ...