50-mechanical mechanisms commonly used in machinery and in life
4 months ago 00:12:30 1
4 months ago 03:15:47 1
4 months ago 00:25:03 1
4 months ago 00:03:32 1
4 months ago 00:02:58 1
4 months ago 00:09:34 6
4 months ago 00:00:59 1
4 months ago 00:30:13 1
4 months ago 00:46:11 1
4 months ago 01:18:48 2
4 months ago 12:00:00 1
4 months ago 00:16:05 27
4 months ago 01:47:18 1
4 months ago 00:17:49 1
4 months ago 00:11:07 2
5 months ago 00:13:43 1
5 months ago 00:11:43 1
5 months ago 01:03:22 1
5 months ago 00:54:19 1
5 months ago 00:32:44 1
5 months ago 01:36:59 1
5 months ago 00:08:46 1
5 months ago 00:56:45 3
5 months ago 01:47:17 1
