导标又称叠标，是为了引导船舶安全地通过狭窄面带有危险性的延长线上。导灯浮标外，还需设置导标。导标是成对地设置在航道中心线成港口口门中心线的称一般均建在岸上，后标须在前标之后有一定距高，且应校前高程，以保证必要的精度。导标的灯光可有各种顾色，分为固定光或闪光，须在其周围环境中极易识别。塔架可安装雷达反射器。
n. beacon
misc. leading marks ; range marks ; navigation mark
在组织及其运营的设计中，总体效率是一个指导标准。
In the design of organizations, as in their operation, overall efficiency is a guiding criterion.
变更管理功能指导标准事件模型和个体事件内外部变更的执行。
A change management function directs the execution of internal and external changes to the standard event model and to individual events.
对于附属的或靠近医院的门诊手术室，要达到临床检查指导标准。
For an ambulatory surgery unit that is affiliated with or attached to a hospital, clinical laboratory testing guidelines should be identical to those required by the related institution.
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