This adapter may be threaded or welded onto the casing, and may have a flanged or clamped connection to match the BOP stack or wellhead.
该接头也许是用螺纹与套管连接在一起，或焊接在一起，以及可能还有一个法兰或卡箍连接与防喷器组或井口配接。
The various ram blocks can be changed in the ram preventers, enabling the well team to optimize BOP configuration for the particular hole section or operation in progress.
闸板防喷器中不同的闸板块可以更换，能够使井队优化防喷器的外型，对于某一特殊的井眼部分或者作业进程。
In this way, the undesired factors causing sealing failure during each link can be avoided to ensure a safe and reliable application of ram BOP.
通过各个环节的把关，消除闸板防喷器密封失效的不利因素，保证闸板防喷器使用安全可靠。
When drilling in deepwater, once the Subsea BOP system breakdown, the BOP and riser must be pulled to the surface and cause great economic loss.
在深水钻井作业中，一旦水下防喷系统发生故障，就必须将防喷器组和隔水管起出水面进行维修，将造成上百万元的损失；
One result, in the 1940s was be-bop or, simply, bop, a musically sophisticated product of young black musicians.
40年代，比鲍普或鲍普问世，这是一种由年轻黑人乐师推出的较为高深的爵士乐。
One result, in the 1940s was be-bop or, simply, bop, a musically sophisticated product of young black musicians.
40年代，比鲍普或鲍普问世，这是一种由年轻黑人乐师推出的较为高深的爵士乐。
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