manual operation

基本解释

Because this is a manual operation, only a small share of bags are examined this way.
因为这种操作是手动的，所以仅一小部分行李可以通过这种方式检测。
How did you approach the porting process? Did you use a tool or was it a manual operation?
你是如何移植的，使用工具还是手工完成？
One is the time-consuming and error-prone tasks associated with manual operation in a huge infrastructure like UCM.
一个是在巨大的类似UCM这样的基础架构中手工操作时，产生的耗时和容易出错的问题。

Because this is a manual operation, only a small share of bags are examined this way.
ECONOMIST: Airport screening technology
The German civil aviation ministry, for example, has demanded to inspect aircraft, as well as the company's operation manual and backgrounders on its engineers and pilots.
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