If faults opened up, no earthquake would occur because there would be no friction to lock them together.
如果断层裂开，也不会发生地震，因为没有摩擦力把它们合到一起。
To make sure no one but Amazon can view your info each code has a lock that can only be opened with the correct key, which Amazon has.
为了确保只有亚马逊才能看到你的资料，每个编码都有一个密码锁，只有正确的密码才能开启。
The travelling valve of the pump is designed to be closed and opened forcibly, and the pump plunger adopts equal-diameter bare pipe with a floating structure to prevent gas lock and sand sticking.
这种抽油泵柱塞游动阀采用机械强制开启和关闭的结构，柱塞为等径光管、浮动结构，可防止发生气锁游动阀、阀球关闭滞后、砂卡柱塞现象。
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