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Ten of its KR1 robots are undergoing trials in commercial settings. They can be fitted with different grippers, depending on what the robot has to do. Strong "gorilla" pincers are used for picking up heavier boxes or, for more delicate items, a suction device can be used.
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当成本涨幅超出内部优化极限时，涨价成为唯一选择。，这一点在safew官方版本下载中也有详细论述
siftDown(arr, i, 0); // 对剩余i个元素重新建堆