With a view to enlarging the ideal bearing size of the shield support, the writer also presents a way to decide the main parameters of a balance jack.
并从扩大理想承载区的观点出发，提出了平衡千斤顶主要参数的确定方法。
The jack housing includes an electrically non-conductive substrate metallized with a metal shield layer.
插座外壳包括利用金属屏蔽层进行金属化的不导电衬底。
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