According to the criterion of fracture instability, a formula of critical water pressure resulting in hydro splitting is derived.
从断裂力学角度分析了高压水头作用下 ,裂隙的扩展机理 ,认为裂隙的扩展多属 型裂纹断裂扩展问题 ,由此推导了水力劈裂作用发生的临界水头压力值。
This essay considers David Hare\'s Stuff Happens,Tom Stoppard\'s Rock \'n\'Roll,and Max Stafford-Clark and Robin Soan\'s Talking to Terrorists as examples of a recent turn(or return)ot documentary theatre in recent British drama.
黑尔的《灾难临头》,汤姆。
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