夜间目测及信号导航等级则要求仅用仪表装置来证明你导航的能力。
Night VFR and command instrument ratings (CIR) require you to prove your ability to navigate by instruments only.
如果夜间气温下降是一个信号，提醒我们的身体入睡的理想时间到了，那么，这说不定就是工业化社会中慢性失眠如此普遍的原因之一。
If falling temperatures at night are a signal to our bodies that it is an ideal time to go to sleep, then that could be one reason chronic insomnia is so prevalent in industrialized societies.
本系统可安装在汽车上，用于雾天或夜间监测前方车辆，并在车速、车距达到临界安全值时发出报警信号，以避免交通事故的发生，确保行车安全。
It can give alarming signal when the speed of vehicle and the distance between vehicles reach the edge of security, so more traffic accidents can be avoided.
举个例子，像蜻蜓这样的昆虫利用水平偏振光作为夜间飞行产卵的指示信号。
For example insects like dragonflies make nocturnal flights to lay their eggs using horizontally polarized light as a beacon.
适用范围适用于各类船舶作夜间航行灯光信号，舰船编队航行信号识别之用。
The scope of application Applied to the ships as lamp signal an nights and identification when the formation Navigation of ship. Adopt standard 1.
适用范围适用于各类船舶作夜间航行灯光信号，舰船编队航行信号识别之用。
The scope of application Applied to the ships as lamp signal an nights and identification when the formation Navigation of ship. Adopt standard 1.
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