Before the procedure, the engineers and technicians had trained with test runs, computer modeling and a mock-up of the instrument package. This is a critical mission operation.
在这个程序之前,工程师和技术人员已经进行了测试运行、计算机建模培训和在一个仪器包模型上操作的培训。这是一个关键的任务操作。
There was a mock up on the computer to prevent large scale mistakes.
电脑上有全尺寸模型,防止犯大规模错误。
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