短语
两级减速装置
double reduction gearbox
;
two-stage reduction gearing
两用钻井装置
combination drilling outfit
高低两速点火装置
high-low firing appliance
两级充气装置
dual stage inflator
两点悬挂装置
two-point linkage
两次曝光装置
double-exposure device
;
double exposure device
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