而且，信号流如此紧密集中，以至于仅仅几十米之外的设备都很难侦测到它。
Moreover, the beam is so tightly focused that equipment a mere dozen metres away from its line would struggle to detect it.
其中包括一些能够自动避免事故的设备，这些设备通过使用wi-fi无线网络信号，让驾驶员知道附近其他车辆的位置，还可以侦测到转弯处有无来车，以提醒驾驶员进行避让，避免车祸。
Some are accident-avoidance devices that use wi-fi signals to let drivers know where other cars are and to see around corners to give drivers a warning about an impending collision.
因此，借由染液自动侦测回馈装置的自动化设备可有效控制染槽内染液中溶质的浓度。
Thus, the automation equipment of the dye liquor automatic detecting feedback device can be used to effectively control the concentration of the solute in the dye liquor in the dye tank.
自此，超声波侦测器被批准用于对飞行器硬件泄漏，地面辅助设备泄漏，以及升空飞船的检测。
Successful tests lead NASA to approve use of ultrasonic devices to search for leaks on flight hardware, locate leaks in ground support equipment and for use on board Shuttle missions.
自此，超声波侦测器被批准用于对飞行器硬件泄漏，地面辅助设备泄漏，以及升空飞船的检测。
Successful tests lead NASA to approve use of ultrasonic devices to search for leaks on flight hardware, locate leaks in ground support equipment and for use on board Shuttle missions.
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