New solids control system is being designed by them.
他们正在设计新的固控系统。
Their work is cleaning and repairing solids control equipment.
他们的工作是清洗和修理固控设备。
That engineer designing the solids control equipment is from the machine shop.
那位正在设计固控设备的工程师是机厂来的。
That engineer designing the solids control equipment is from the machine shop.
那位正在设计固控设备的工程师是机厂来的。
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