太阳反射器

It involves a spherical primary mirror and the secondary mirror with profile given by computer.lt is not necessary for the new optical system to obtain the on-axis solar image,so the secondary mirror may have a simpler profile.

一种由球面主镜和由计算机算出曲面型线的二次镜组成的新型二次反射聚光系统，可以减少制造困难，当这种光学系统用于太阳能聚光器时，由于不需要得到轴上的太阳像，其二次镜型线可更为简单。

The technology uses fields of computer-guided flat mirrors called heliostats to track the sun and focus its rays on a boiler at the top of a 60-meter tower.

这个科技使用，电脑导航的平面镜场地，称为日光反射器，来追踪太阳，让太阳光投射在60公尺高塔上的锅炉。

This is particularly so when the concentrator has to track a moving incident source,for instance,to track sun in concentration solar power application using fixed target focusing heliostats.

譬如，在新型高倍太阳能聚光，塔式光热发电的应用上，定日镜场的每一台定日镜必须跟踪太阳并将太阳光反射到中央高塔的接收器上；为了提高聚光比和接收效率科学家考虑使用聚光式的定日镜，然而由于太阳跟踪的缘故其聚光器则必须在偏轴聚光的条件下使用，这就带来了光斑阔大即偏轴像差的问题。

Venus's cloud cover is a great reflector of sunlight.

金星的云层是太阳的主要反射器。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。