词汇	sacrum rest
释义	sacrum rest 腰骶支持架
随便看	production records production recovery production region production registry production registry system production-related production relation production relations production relationship production reliability acceptance test Production Reliability Demonstration Test production rate production rate change cost production rate decline production-rate history Production Rate Index production rate in ultrasonic machining production rate limit production rate per hour production rate per person production rates production ratio production ration production raw material production reactor