主要原料

The methods of preparing stable boehmite sol and zirconium hydroxide sol by anionic exchange method using inorganic compounds as raw materials were investigated in this dissertation,and forming-membrane capability of the sols were also investigated on the base of the it.

本论文主要研究了以无机盐为原料，采用离子交换溶胶-凝胶法制备稳定勃姆石溶胶和氢氧化锆溶胶的方法，并在此基础上对溶胶的成膜性进行研究。

It is a kind of basic slag with stroger activity, and an important raw material not expensive for cement production, and it is easily to blacken and to lump owing to piling up on open field.

它是生产高炉锰铁或生铁的主要副产品，现已渐渐成为水泥生产中的重要廉价原料。

Phthalic anhydride is an important organic chemical material and is mainly applied for such fields as plasticizer, alkyd, unsaturated polyester resin, dyestuff and medicine.

苯酐是一种重要的苯有机化工原料，主要应用于增塑剂、醇酸树酯、不饱和聚酯树脂、染料、医药等领域。

This dissertation is concerned with the approaches to a new high density liquid fuel, tetrahydrotricyclopentadiene, which can be synthesized with dicyclopentadiene as raw materials by three steps: Diels-Alder reaction, separation and hydrogenation. The main points of the paper are listed as follows.

本文以双环戊二烯为原料，通过双烯加成、分离、加氢反应得到目的产物——新型高密度液体燃料四氢三环戊二烯，主要研究内容包括： 1。

This dissertation is concerned with the approaches to a new high density liquid fuel , tetrahydrotricyclopentadiene, which can be synthesized with dicyclopentadiene as raw materials by three steps: Diels-Alder reaction, separation and hydrogenation.

本文以双环戊二烯为原料，通过双烯加成、分离、加氢反应得到目的产物——新型高密度液体燃料四氢三环戊二烯，主要研究内容包括： 1。三环戊二烯的合成采用两种方式对TCPD的合成进行了研究：DCPD直接热聚法、DCPD与环戊二烯双烯加成法。

The two-component-spray gun S 2-k is designed and constructed for application of two component materials f.i. 2-k lacquers or glues.

双组分喷枪又称双头喷枪，由2个圆形或者扇形液体雾化帽组成喷射主体头，主要用于喷射双组分原料、双色喷涂、纳米喷镀、激光上色等高精密电子行业。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。