ouj/zhengxuelong: 硬件开发 @ 5a3776b111b716e314f536731784c6c3d290936e

zhengxuelong 2bbd2339a4 20220414		2 lat temu
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磁铁	2bbd2339a4 20220414	2 lat temu
结构件	2bbd2339a4 20220414	2 lat temu
铜套	2bbd2339a4 20220414	2 lat temu
铜针	2bbd2339a4 20220414	2 lat temu
锌合金	2bbd2339a4 20220414	2 lat temu