... double cage motor 双鼠笼电动机 double casing 双层外壳 double-casing machine 双机壳型电机，内外机座型电机 ...
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double-casing volute pump 双涡壳泵
double-casing motor 双层机壳式电机 ; 双层机壳式机电
double-casing turbine 双缸汽轮机
double-casing volute pump coupling 双涡壳泵联轴器
double-casing machine 双机壳电机 ; 双机壳型电机
double-casing 双层机壳式
A double casing sealed structure is used in the ionization chamber with thin Windows of large diameter.
电离室采用大口径双重密封结构，制作工艺难度大，要求高。
Pig lift method with U-shape double strings is easy to be limited by size of casing and very complicated in construction operation process. Thus, the large restrictions exist in the field application.
球塞气举方式采用U型双管柱易受套管尺寸限制，且施工作业较为复杂，其应用受到较大限制。
Upper section composed of driving sprocket upper casing with rails (double chain) and discharging outlet.
上部区段，由传动链轮及带有轨道(双排链)的上部机壳、卸料口组成。
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