萤石

The factory is a professional production of fluorite powder, antimony, lead and zinc businesses.

本厂是一家专业生产萤石精粉、锑、铅、锌的企业。

This was also the year they introduced the prototype FCT-150 fluorite triplet apochromat and the revolutionary EM-2000 mount which used electric clutches and had a direct read out of R.A. and Dec.

这一年也是FCT-150萤石三片式APO折射镜和革命性的EM-2000型赤道仪问世的时间，EM-2000使用电子装置可以直接读出赤经/赤纬度。

The FCT-150, a 6 fluorite triplet apochromat, yields exquisite images at f/7 or even f/5 with its optional focal reducer.

高桥FCT-150，采用6英寸的萤石三片APO物镜，能在f/7时产生高度细节的图象，如果采用减焦镜，能在f/5时实现相同效果。

This research and development effort bore its first noteworthy fruit in 1886 when Zeiss marketed the first "aphochromate" microscope objectives; this apochromatic microscope objective offered superior quality. Employing "fluorspar" elements this was the first use of crystal in an industrial optical application.

这些研究和发展的努力在1886年结出了第一个果实，蔡司公司于当年推出了"aphochromate"显微镜即复消色差透镜显微镜；此种显微镜提供了出众的品质，其中萤石成分的使用是玻璃晶体在工业光学中的首次应用。

As substitute for fluorite lens, a double-layer DOE is used in a long focal-length apochromatic objective lens. The modulation transfer function of this hybrid optical system is suggested for evaluating diffraction efficiency of the multilayer DOE. The results show the diffraction efficiency has a wide and symmetrical distribution in the whole waveband.

利用双层衍射光学元件替代萤石透镜校正混合光学系统的二级光谱，设计并制作了一套长焦距物镜，并利用系统调制传递函数评价了多层衍射光学元件衍射效率，测试结果表明衍射效率在整个设计波段内以较高的数值平均分布。

Finally, in 1977, Takahashi Seisakusho Ltd. of Japan introduced the world's first astronomical telescope with a fluorite objective.

最终在1977年，日本的Takahashi Seisakusho有限公司制造了世界上第一架用萤石做物镜的天文望远镜。

Carefully study the quantitative relations of flotation knowledge from a large number of on-the-spot experiments, give the quantitative relations of fluorspar and sodium augite ore separately and use these relations as the foundation of adjusting technological regulation, define the technical and economical indexes of concentration plant, give the basic task and the structure of FICS based on ANN.

通过大量的现场试验，对浮选知识的定量关系进行了详细研究，分别得出萤石型和钠辉石型矿石知识的定量关系，并以此关系作为工艺调节措施的依据之一；确定了选矿厂的技术经济指标及包钢选矿厂的选别指标；给出了基于人工神经网络的浮选智能咨询系统的根本任务和基本结构。

I have two large mining companies, mainly barite and fluorite.

我公司拥有两座大型矿山，主要是重晶石和萤石。

Barium sulfate content was 95 percent, fluorite high calcium fluoride.

硫酸钡含量为95%，萤石含氟化钙高。

CONTAINING BY WEIGHT 97 % OR LESS OF CALCIUM FLUORIDE.

按重量计氟化钙含量≤97%的萤石 o： C- O； P4 Q

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。