The safety clamp prevents the tool string from being dropped downhole accidentally if the slips or elevators securing the string lose their grip.

如果卡紧管柱的卡瓦或吊卡失去了其抓力，则安全卡瓦可防止工具管柱意外地掉落井下。

youdao

The slips in the packer is for supporting packer and for locking rubber after anchoring. The capability of the slips influences directly on oil well yield and productive safety.

封隔器上的卡瓦锚定后起到支撑封隔器、锁定胶皮筒的作用，其性能好坏直接影响到油井的产量和生产安全。

youdao

With former first-round safety Kenny Phillips signing with Philadelphia, there is a bit of a hole at defensive back and New York might be interested if Texas safety Kenny Vaccaro slips.

WSJ: Determined Giants on the defensive as draft nears