根据输气管道安全的需要，对干线快速截断阀压降速率设定值的确定方法进行了研究。
For the safety of gas transmission in long distance pipeline, the method regarding how to get the proper value of pressure drop rate for the fast block valve on pipeline is studied.
取得或设定值，这个值表示安全性权杖是否必须能够执行密码编译作业，例如加密。
Gets or sets a value that indicates whether the security token must be capable of performing cryptographic operations, such as encryption.
设置安全阀可使得在轮胎压力达到设定值时，筒体形成空载。
The arrangement of the safety valve makes the barrel body form zero load when the tyre pressure reaches the set value.
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