The mounting labor and material costs of good times cut down his margin until it disappears and he abandons his mine.
在经济繁荣时期，劳动力和材料成本不断上升，金矿的利润缩水，直至无利可图，此时，矿主会放弃开采。
This paper describes the change of FPC mounting technology and theme of material and mounting technology etc of FPC.
概述了FPC的安装技术的变迁以及材料和安装技术等方面的课题。
Also, the hair collecting material can be formed into the form of the blade without any support other than a rod for mounting the fabric.
而且，可将毛发收集材料形成为除了用于安装织物的杆以外没有任何支撑体的桨叶的形式。
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