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1·The Hubble's primary mirror, nearly eight feet across.

哈勃望远镜的主镜直径将近8英尺。

2·At last, the back profile of the primary mirror is optimized.

最后对主镜的背部轮廓形状进行了优化。

3·The special requirement about primary mirror in modern space camera is stated.

叙述了现代空间相机对主镜的特殊要求。

4·The primary mirror. This is the paraboloidal mirror at the bottom of the tube.

是位于 镜筒底部的一块抛物面 镜。

5·A kind of structure design of lightweight of primary mirror is introduced in this paper.

介绍了主反射镜的一种轻量化结构设计；

6·18-point-support system is used as axial support in the 1 meter telescope primary mirror.

一米级天文望远镜主镜常采用18点底支承设计，以降低主镜面在重力作用下产生的变形误差。

7·The side supporting method by using the mercury bag, for the 1.2m primary mirror, is adopted.

其中对主镜采用了水银带侧支承的方法。

8·The primary mirror is 80 cm in diameter, a respectable size even for an observatory on the ground.

主镜的直径为80厘米，这一口径即使在地面天文台也是很可观的。

9·The technical building is a cylinder construction with a diameterthe size of the 39-metre primary mirror of the E-ELT.

科技楼为圆柱体建筑，直径与欧洲极大望远镜（E-ELT）的主镜直径一致，均为39米。

10·The technical building is a cylinder construction with a diameter the size of the 39-metre primary mirror of the E-ELT.

技术大楼是一个圆柱状结构，直径与E-ELT主镜直径39米的尺寸相同。