能见度

Using the time-gain compensation technique to compensate for ultrasonic wave's weaking when transmitting in the air,and reduce the fluctuation of echo signal.The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.

和其他方法相比，如激光测距、微波测距等，由于声波在空气中传播速度远远小于光线和无线电波的传播速度，对于时间测量精度的要求远小于激光测距、微波测距等系统，因而超声波测距系统电路易实现、结构简单和造价低，且超声波在传播过程中不受烟雾、空气能见度等因素的影响，在各种场合均得到广泛应用。

Part two: The visibility at Gannet Head is 1.5 miles.

第二部分：在干耐特头的能见度是 1.5 海里。

In addition, the revision of sky gray scale and visibility processing of image are explained.

此 外，本文还论述了天空的灰度修正、图象的能见度处理等。

Mr Haik says that institutional and retail investors remained keen to provide capital to companies with good earnings visibility.

艾克表示，机构和散户投资者仍乐于向盈利能见度良好的企业提供资金。

Hence, in headlamp glasses they prevent dazzling, and ensure perfect visibility and lighting conditions.

因此，它们用于前照灯玻璃罩时，既可以防止眩目，又能确保最佳的能见度与照明条件。

Males, however, appeared more likely to be guilty of poor decision-making, risk-taking, and inattentiveness, examples of which include misjudging weather and visibility or flying an aircraft with a known defect.

可是，男飞行员更容易做出错误或冒险的决定，注意力不集中，比如对天气和能见度判断失误或驾驶一架明知有故障的飞机。

This paper discusses the four main elements which inflect traffic security state: traffic state, weather, visibility and over-speed.

对于影响道路交通安全状态的因素，本文中主要讨论的4个因素：交通状态，天气因素，能见度，超速。

It's helpful to disable the visibility of the original image from time to time, as in the inset.

这有助于禁用的能见度原始图像时，如在插页。

Direction down the runway with the main category I precision approach instrument landing system, the protection of aircraft in low clouds, low visibility weather conditions, such as the complexity of security movements.

在跑道主降方向设有I类精密进近仪表着陆系统，保障飞机能在低云、低能见度等复杂天气条件下安全起降。

Some companies have been left with bad decisions in the past ranging from hiring a lowball fee SEO consultant that "guarantees" specific search visibility to instances where certain SEOs used questionable tactics to shortcut results only to end up losing the value of those efforts or worse, being penalized.

一些公司已经只剩下错误的决定在过去，从聘请lowball收费搜索引擎优化顾问说，"保证"特定搜索能见度情况下，某些SEO的使用有问题的策略，以快捷的结果最终只能失去的价值，这些努力或者更糟的是，受到惩罚。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。