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- Gradient multi-setting cement slurry system can take the place of double stage cementing in long isolation sections in certain degree, and it displaces many advantages. 對於封固段較長的固井作業,採用梯度多凝水泥漿體系,在一定程度上可以代替雙級固井,具有很強的優越性。
- The accessories of MSC/HSC Stage Cementer include a first-stage plug, free-fall opening plug, closing plug, shut-off baffle and pumping-down opening plug. 重力塞為流線形,內部裝有鉛,投塞后快速自由下落至下滑套上並形成密封。
- The HSC-A Hydraulic Stage Cementer features inner closing structure, opening through pressure difference. The closing plug drives the closing sleeve down and then shut circulation ports. 型壓差式雙級注水泥器為內關閉式結構,不需投重力塞,通過液體的壓力差打開循環孔,關閉塞帶動關閉套下行關閉循環孔。
- But the two stage tools used to so far are mostly required to drill the rubber plug or cement plug out after the cementing job is done. 但目前所使用的雙級注水泥工具固井后均需用小鑽桿鑽除膠塞和水泥塞,費用高、時間長。
- There are many spotlights on the stage. 舞台上有很多聚光燈。
- Please dim out the stage for the final scene. 請在最後一場即將開演時使舞檯燈光轉暗。
- The singer was led off the stage by the maestro. 歌唱家由那位著名的指揮領著離開了舞台。
- I always get the jitters before I go on stage. 我登台之前總是感到緊張。
- She did the first stage of the trip by train. 她行程的第一段是乘火車的。
- She's wanted to go on the stage from an early age. 她從小就想當演員。
- The singer got the bird when she came out on stage. 這位歌手一出現在舞台上人們便以噓聲嘲弄她。
- The disease is still in its primary stage. 這疾病仍然在初發階段。
- Negotiations were at a crucial stage. 談判正處於一個關鍵的階段。
- The technique is still at the experimental stage. 這項技術正處於實驗階段。
- The actors were booed off the stage. 演員被倒彩聲轟下了台。
- The reform is at its critical stage now. 改革正處於關鍵階段。
- The last few minutes before going on stage scow new actors up. 上台前的最後幾分鐘常常使新演員很緊張。
- A lot of electric lamps illumined the stage. 舞台由許多電燈照亮。
- He quitted the stage of politics. 他退出了政治舞台。
- She stood alone on the enormous stage. 她孤零零地站在巨大的舞台上。