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block: Writes wait until buffer space is available. Use when you trust the producer to await writes properly.
，这一点在WPS下载最新地址中也有详细论述
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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.