multistage cooling 中文意思是什麼
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Ldpb series multistage centrifugal pump is equipped one kind of close rat - caged motor cooling by wind. the pump is artistic in shape and quiet when working
Ldpb系列離心泵為小型臥式多級非自吸離心泵,在家庭供水、工業、建築方面有廣泛的用途。
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