您要查找的是不是：
- forsterite refractor 镁橄榄石耐火材料
- A three-inch refractor will give an excellent view. 一架三英寸的折射望远镜就能看到极好的景象。
- This refractor is perfect for everyone! 这折射镜是极其精美的，对每一位同好！
- And lastly, you can trust an APO refractor. 折射镜总是可以信赖的。
- Almost any type of telescope will do (reflector or refractor). 几乎所有类型的望远镜都可以（反射或折射等）。
- A three-inch refractor will give an excellent view as well as showing Titan. 一架三英寸的折射望远镜就能看到极好的景象，还可以看出土卫六。
- Properties and its production technology of forsterite were presented. 介绍了镁橄榄石矿物性质及其生产工艺。
- Now I will perform the retinal refracting.This is a retinal refractor. 现在给你作检影检查，这是视网膜检影仪。
- Noe I will perform the retinal refracting. This is a retinal refractor. 现在给你作检影检查，这是视网膜检影仪。
- M31, M33, M83 and NGC 253 were taken through the little Ioptron 80mm refractor. M31，M33，M83和NGC253用的是那个小小的艾顿80毫米折射镜。
- PETRICEVIC V,GAYEN S K,ALFANO R R.Laser action in chromium-doped forsterite[J].Appl Phys Lett,1998,52:1040. 雷海容;刘宏发;严柏生;等.;四价铬镁橄榄石激光器特性研究
- The refractor is light weight, portable and can be used for either visual or CCD imaging. 该折射的是重量轻，携带，可用于无论视觉或ccd成像。
- And the result of the experiments shows that the components and sintering temperament are the key factors of preparing forsterite ceramic. 试验结果表明:配方组成与烧结温度是镁橄榄瓷制备的关键因素。
- He began examining nearby galaxies with a 10-inch refractor to see whether any stars had flared up. 他用口径10英寸的折射望远镜巡视邻近的星系，查看是否有恒星已经闪亮。
- The forsterite ore deposit in Yichang of Hubei Province, being one of the limited large ore deposits across the Mainland China, is used to produce molding sand. 宜昌镁橄榄石矿,是我国为数不多的大型矿床之一,用其矿石生产的镁橄缆石型砂。
- A woman looks through a refractor telescope with a solar filter on top of the roof of a school in Hong Kong. 香港一学校屋顶上，一位妇女用带有滤光片的折射望远镜观看。
- The product of forsterite sand in different standards from forsterite ore after two steps crushing,grinding and classification,gravity separation has been obtained. 镁橄榄石矿经过两级破碎、磨矿分级、重选、烘干、筛分即得到各种规模的镁橄榄砂产品；
- Discovered by Barnard 1892 September 9 using the 36 inch (91 cm) refractor at Lick Observatory. 它于1892年9月9日由Barnard于Lick天文台用36英尺（91厘米）折射望远镜发现。
- The lens telescope, or refractor, was vastly improved when it became possible to manufacture high-quality lenses made from flint glass. 透镜望远镜，或称折射望远镜，在人们能够制造出高质量的火石玻璃透镜以后得到了很大的改进。
- Namely, the concentration is controlled with the refractor factor that is corrected by viscosity and cooling rate tests. 生产应用证明,该方法直接、简单、有效。
