51.the automatic tracking function of the ARPA is out of order. We can only input data mamually , and the deviation is beyond the scope.

ARPA的自动跟踪功能坏了。我们只能手动输入数据。误差太大。

Operated via computer, the Laws features automatic target tracking and acquisition, only requiring a human to give it the go-ahead.

通过计算机操作，Laws 具有自动目标跟踪和捕获功能，只需要一个人给它批准。