单词 | 主发条 |
例句 | DEFINITIVE EXAMPLES 权威例句〔barrel〕The cylinder within the mechanism of a timepiece that contains the mainspring.发条盒:一圆柱形物,内装含有主发条的表的零件美国传统〔tumbler〕A piece in a gunlock that forces the hammer forward by action of the mainspring.机心:枪机内可通过主发条运作推动击铁向前的机伴美国传统 |
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