But some have hired shareholder identification companies such as JSS to dig up more information.

其中一些人聘请了股东识别公司如JSS去挖掘更多的信息。

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JSS problem is a classic problem and is still a hotspot, however, restricted by fixed machine route, JSS model does not accommodate to flexible manufacturing environment.

古典JSS问题是一个经典问题，至今还是一个研究热点，由于JSS问题对机器加工路线做了限定，因此难以适用于柔性制造系统。

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