光线

Such sensors represent an application of the photoelectric effect, in which light falling on metal sends electrons flying off it.

这种侦测器是光电效应的一种应用，照在金属上的光线造成电子飞离金属。

The invention discloses a passive optical network signal monitoring method comprising the following steps: obtaining a PON signal from one side of an optical line terminal and an optical network unit, detecting the photoelectric property parameter of the obtained PON signal and judging whether the detected photoelectric property parameter lower than a predeterminate photoelectric property parameter threshold or not, if it is, a corresponding alarming signal is transmitted to the OLT.

本发明公开了一种无源光网络信号监控方法，包括以下步骤：获取来自光线路终端和光网络单元中一侧的PON信号，检测所获取的PON信号的光电性能参数；和判断所检测出的光电性能参数是否低于预设的光电性能参数阈值，如果是，则发送对应设置的告警信号给所述OLT。

Dichromate colloid solutions employed in photoengraving provide acid resists through the action of light on the sensitized surface.

重铬酸盐胶液是照相蚀刻版所用的感光液及抗蚀膜。光线的照射引起它的抗蚀作用。

I have always liked the comparison towards the early forms of image making, the photogram.

是的 ，我还是将一件物体暴露在光线之下，只是透过数位技术来记录。

This can take some practice because you also have to look at where the light will not be falling. Photographing a canyon, for example, you might see that the west wall will be beautifully lit in the early morning, if the canyon is deep, however, the east wall will be in such complete shadow that your camera will be capable of rendering it only as a great black blob. Unless this is the effect you want, you'll either have to modify your composition, shoot it later in the day, or plan to return on an overcast day when both sides will be photographable.

例如当拍摄大峡谷时，在早晨，你可能会看到峡谷的西面山壁在阳光的照耀下非常美丽，但是如果峡谷比较深，峡谷东面的山壁由于完全处在深深的阴影里，你的相机拍出来的图片将是一片黑色的阴影，除非这就是你想要的效果，否则，你要么换个角度重新构图，要么等待太阳升起来后的合适时机，或者在某个多云的天气再来这里重新拍摄，因为多云的天气时，峡谷两边的山壁光线柔和都更适合拍摄。

Pierre:You mean then that there is something about that rock that gives off rays of its own-rays powerful enough to go through black paper and affect this photographic plate.

皮埃尔：你是说这块矿石有某种特性，能够自己发光，而且光线很强，能够穿透黑色的纸，并对底片产生作用。例2（玛丽萌发深入研究放射性的念头

The intensity of a source of light,such as an eletric liht bulb,can be measured with a photometer.

光线来源，如一个电灯泡的强度，可由光度测定器测出。

The totally blind group did not suffer from what's called photophobia. But light did aggravate the migraines of the legally blind group.

完全失明的人不受到"恐光症"的影响，但光线确实加重了法定盲人的偏头痛。

As he spoke, the public photophone flashed a message from San Diego.

在它讲话的时候公共光线电话上显示出圣地亚哥那边传来的信息。

In a daze, Wang turned the little green knob on the photophone to confirm.

一阵恍惚，王转了一下光线电话上的小绿旋钮表示确认。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。