单词	备孕
释义	备孕 BèiYùnto be trying to get pregnant繁体備孕
随便看	frictional working current friction among friction analysis friction analysis electric micro-machining friction analyze friction and abrasion friction and attrition test machine friction and inertia friction and lubricating Friction and lubricating in punching friction and resistance friction and sealing materials friction and spray friction and spray electroplating friction and spraying electroplating friction and wear friction-and-wear friction and wear behavior friction and wear be-havior friction and wear experiment Friction and wear experimental machine friction and wear mechanism friction and wear performance friction and wear propertie friction and wear properties