double-stroke solid-die automatic cold header 双击整模自动冷镦机
double-stroke deep-well pump 双冲程深井泵
UPWARDS ARROW WITH DOUBLE STROKE 带有双删除线的向上箭头
DOWNWARDS ARROW WITH DOUBLE STROKE 带有双删除线的向下箭头
double-stroke keyboard [计] 双击式键盘
double overarm back-stroke 双臂仰泳
two stroke double-acting type 二冲程双作用式
two-stroke cycle double-acting 二冲程双作用的
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