短语词组短语bailer r method 捞砂法bailer r method of cementing 用捞砂筒注水泥bailer method of cementing 用捞砂筒注水泥the dump bailer method 倾筒法打水泥塞dump bailer method 倾筒法;倾筒法打水泥塞 返回 bailer method