由于进料量、进料成分、产品价值以及公用物料频繁地发生了变化，因此，在装置冷侧的塔中进行这种变化尤为重要。

This is particularly important in the columns in the cold side of the plant because frequent changes had been made to feed rate, feed-composition, product values and utility costs.

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此单元组包括其他未分类的劳动者，其执行物料搬运，清理，包装和加工，制造和公用事业的其他基本活动。

This unit group includes labourers, not elsewhere classified, who perform material handling, clean-up, packaging and other elemental activities in processing, manufacturing and utilities.

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你可以去过道尽头的物料室选你要的办公用品。

You can pick up your office supplies from the supply room at the end of the corridor.

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