这种加热器装有充满水的钢管，在反射面前头曲折布置，反射面将太阳光聚焦在钢管上。

The heaters have water-filled steel tubes that zigzag in front of a reflective surface, which concentrates the sun's rays on the tubes.

它有一个反射面，但它的亮点是高度集中。

It has a reflective surface but it's highlights are highly concentrated.

各种雷达天线、卫星通信地面站天线的实际反射面都是变形曲面。

A real surface of reflector is always the deformed one for antennas in radars and satellite earth stations.

空间可展天线由索网和可展构架组成，形成索网抛物面形反射面。

Space deployable antenna is composed of a reflective mesh and a deployable truss, forming a mesh parabolic surface.

对一个已给定的反射面，与馈源支撑结构有关的最佳吻合抛物面焦点的定位也是很重要的。

For a given reflector surface it is also important to locate the focal point of the best -fit paraboloid relative to the existing feed support structure.