The packing time, cooling time and packing pressure are the most important factors.
其中保压时间、冷却时间及保压压力是最重要的因子。
The packing time is about 80% of the cooling time which itself is often less than that which is set.
保压时间大约是冷却时间的80%,冷却时间常常小于其设定值。
I spend so much time travelling that I've got packing down to a fine art.
我常常旅行,这就把打点行李学到家了。
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