在操作杆上面亮着一盏灯，指示药物能够被取用。
A light lit above the lever indicating drugs were available to be administered.
阀杆也应该在顶部配置方向指示器，用于当手柄拆卸下来时指示阀瓣的位置。
The shaft also shall have a directional indicator on top to indicate disc position when the handle is removed.
指示装置包括鼠标、跟踪球、操纵杆、光笔、数字化书写板等等。
Pointing devices include mice, trackballs, joysticks, light pens, digitizing tablets, and so on.
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