drain plug opening 排放螺塞开孔
pipe plug opening 管塞孔口
spark plug opening 火花塞开口
filler plug opening 加注口塞孔
level plug opening 液面螺塞孔口
level check plug opening 液面检查螺塞开度
Pull out Plug before Opening 打开之前必须拔掉插头
The pump-down opening plug is used for continuous cementing operation and in deviated Wells.
顶替型打开塞用于连续式双级注水泥作业，也适用与在斜井中使用。
Featuring streamline shape and filled with lead, the free-fall opening plug can quickly free-fall to the lower sliding sleeve.
重力塞为流线形，内部装有铅，投塞后快速自由下落至下滑套上并形成密封。
Last week's opening of the Shanghai auto show provided the latest data point as Buick revealed a strikingly styled SUV concept with a carbon-fiber chassis and a plug-in hybrid powertrain.
上周开幕的上海汽车展上曝出了最新的数据点：别克展示了外形亮丽、时尚的SUV概念车，该车采用碳纤维底盘，并内置有混合动力传动系统。
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