一家航运货运公司经理说，雅宝路商户租用货舱车皮的数量急剧减少。
One shipping-company manager says that demand from traders for commercial space in Yabao Road has fallen sharply.
根据原理图，估计在测试中哪些组件容易损坏，估计这些组件的数量，在进行测试前到货舱去领取所需组件。
Base on schematic estimate which components will be damaged easily during test , estimate the quantity required and request such materiod from shore before starting test .
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