如果你觉得有必要，请在拴所有的马时使用快松结，这样的结可以在你拉拽绳子的一端时马上松开被拴住的马。
Tie all horses with a quick-release knot so if you need to, you can instantly pull the end of the rope and release the horse.
二极管是由一个PN结加上相应的引出端并封装管壳构成的。
Semiconductor diode is a PN junction together with the corresponding client leads and package composition shell.
二极管是由一个PN结加上相应的引出端并封装管壳构成的。
Semiconductor diode is a PN junction together with the corresponding client leads and package composition shell.
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