Pertaining to a connection by which one end can only send signal and the other can only receive signal. 用於修飾兩點之間的連接，這種連接的一端只能發送信號，而另一端只能接收信號
Pertaining to the detection and isolation of a malfunction or mistake. 用於修飾或說明與故障或錯誤的檢測和隔離有關的特性。
Pertaining to a process, or procedure, invoked by a user without the latter being aware of its existence. 用於修飾或說明一種進程或過程，它允許用戶調用它，而用戶並不用知道它的存在。
Pertaining to a quality implying a close logical relationship with, and importance to, the matter under consideration. 用來修飾或說明一種性質，意味著與所考慮的事情有密切的邏輯關係，且有重大的影響。
