It's goal is the successful design and operation of chemical reactors.

它的目标是成功的化学反应器设计和操作。

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Each unit operation follows the same physical laws and may be used in all chemical industries.

每个单元操作遵循相同的物理规律，可以用在所有的化学工业。

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In chemical engineering and related fields, a unit operation is a basic step in a process.

在化学工程及相关领域，一个单位的运作是一个过程基本介入。

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To catch the enzyme in the act, Merck scientists conducted a kind of chemical sting operation.

FORBES: On The Trail Of Alzheimer's

Last September, hundreds of emergency personnel were involved in a rescue operation during a simulated chemical attack at Bank Tube station in the City of London.

BBC: NEWS | UK | UK 'would cope with Tube attack'

Emergency crews have removed a "potentially hazardous" chemical drum washed up on a Jersey beach, in an operation taking about two-and-a-half hours.

BBC: 'Hazardous' chemical drum found on Jersey beach