direct visual observation的意思|示意

The bayonet-type connecting mechanism with the advantages of no need of direct visual observation, remote operation, locking function and high reliability is used as an inner part of a reaction pile.

该装置提供了一种无需直接目视，远程操作，带锁紧装置的，高可 靠性的反应堆内部构件的刺刀式连接结构。

The recorder is suitable for mobile observation because of its visual records presenting direct results and its easily done maintenance and operation.

因为采取了可见记录，观测结果更直观，维修管理方便，适于流动观测。