The pump casing, impeller, motor housing and stationary base elbow shall be manufactured of close-grained cast iron, ASTM A48, Class 30.
泵壳，叶轮，电机壳和固定底座弯头都应该采用符合美国材料试验协会ASTMA48级别30致密铸铁制造。
This article can provide the theory base for establishing the cementing quality evaluation method of adhering sand casing with considering the effect of glue layer thickness.
本文研究内容可以为建立考虑胶层厚度影响的粘砂套管固井质量评价修正方法提供理论基础。
All devices for switching, protecting and controlling are installed on a base plate installed in a separate steel sheet casing.
所有的开关，保护，控制装置皆分别装置在各控制盘上。
The utility model relates to a motorcycle handle switch device which comprises a switch casing, a driving shaft, a contact ring, a contact sheet, a spring, a base plate and a wire.
一种摩托车手柄开关装置，包括开关壳体、传动轴、接触环、接触片、弹簧、基板以及配线。
In addition, the base board, the casing and the elements contacting the panel marsh gas of the utility model are all made of plastic materials, thereby preventing erosion from marsh gas.
另外，本实用新型的底板、壳体、面板沼气接触到的元件均采用塑料材料制作，从而避免了沼气的腐蚀。
Sewage slurry pump is single stage single suction vertical centrifugal pump, the main components are volute, impeller, pump base, pump casing, support tube, motor base, motor and other components.
浑水泥浆泵是单级单吸立式离心泵，主要螺杆泵部件有蜗壳、叶轮、泵座、泵壳、支撑筒、电机座、电动机等组成。
Sewage slurry pump is single stage single suction vertical centrifugal pump, the main components are volute, impeller, pump base, pump casing, support tube, motor base, motor and other components.
浑水泥浆泵是单级单吸立式离心泵，主要螺杆泵部件有蜗壳、叶轮、泵座、泵壳、支撑筒、电机座、电动机等组成。
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