单词	--渗坑--落水洞
释义	1.落水洞；2.渗坑sink
随便看	constant-voltage dynamo constant voltage generator constant-voltage generator constant-voltage modulation constant voltage motor constant-voltage motor constant-voltage motor-generator constant voltage or constant current power supply constant voltage power supply constant-voltage rectifier constant-voltage regulation constant voltage regulator constant voltage source constant voltage stress constant voltage system constant voltage transformer constant-voltage transformer constant voltage transmission constant-voltage transmission constant voltage welding machine constant-voltage welding machine constant-volume constant volume air thermometer constant-volume air thermometer constant-volume balloon