发布时间:2025-02-01 14:04:13
梳齿板伸缩装置按梳齿板受力状况分为:
1. 悬臂,代号为SC ;
2. 简支,代号为SS。
简支梳齿板伸缩装置按活动梳齿板的齿板与伸缩缝的相对位置分为:
活动梳齿板的齿板位于伸缩缝一侧,代号为SSA;
活动梳齿板的齿板跨越伸缩缝,代号为SSB。
买了件裙子吊牌是桑蚕丝的可里面的标是聚酯纤维的价钱也很贵我自己怎么识别呢
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