high-efficiency screw pump的意思|示意
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高效螺杆泵
high-efficiency screw pump的网络常见释义
高效螺杆泵 ...高效螺杆泵 变频调速 聚氨酯保温 [gap=2100]Keywords] crude oil pipeline transportation；enclosed transportation；high-efficiency screw pump；variable-frequency speed regulation；polyurethane insulation ..