有用矿物

Main useful minerals in these two ore belts include anatase, rutile and ilmenite.

这2个矿带的主要有用矿物为锐钛矿、金红石及钛铁矿。

In the fine granite vein-type wolframite and scheelite deposit, which contains molybdenum, the main useful minerals include wolframite, scheelite, molybdenite, chalcopyrite, etc.

在花岗岩细脉型含钼的黑、白钨矿床中，主要有用矿物为黑钨矿、白钨矿、辉钼矿、黄铜矿等。

The large tantalum niobium tungsten ore pertains to the fine-grained granite deposit of albite muscovite. The useful minerals mainly consist of wolframite and scheelite, and a small number of tantalum niobite, fine spar, tantalum aeschynite, beryl, and bismuth, etc.

该大型钽铌钨矿为细粒钠长石化白云母花岗岩矿床，主要有用矿物为黑钨矿、白钨矿及少量的钽铌铁矿、细晶石、钽易解石、绿柱石和辉铋矿等。

At the same time, the stripping ratio control measours of new design open-pit and producted mine are put forward. Minging more coal with little overbueden under ensureing correspond overbueden and mining coal. This is beneficial for modern surface mining.

同时提出了新设计露天矿和生产露天矿生产剥采比的控制措施，在保证剥采不失调的前提下，尽量不进行超前剥离，用最小的生产剥采比，采出最多的有用矿物，这种方法对现代露天矿具有一定的指导意义。

Generally sPeaking,the PorPhyry coPPer contains a great quantity of valued associated minerals, of which most can be recovered comprehensively, especially associated gold and silver.

斑岩铜矿中含有大量的伴生有用矿物，多数可综合回收利用，尤其是伴生金银的回收，越来越被人们所重视。

There are many types of tin sulphuric ore accompanied with many valuable minerals, thus it has high utilized, economic and academic research value.

锡石硫化矿类型多，伴生有用矿物种类多，综合利用价值高，有着较高的经济价值和学术研究价值。

China has abundant resources of tin sulphuric ore.

锡石硫化矿类型多，伴生有用矿物种类多，综合利用价值高，有着较高的经济价值和学术研究价值。

Features: high efficiency, small amplitude and high frequency of screening; it differs from the conventional screens with breaking of the surface tension of pulp and small granularity high speed vibration on sieve cover and accelerates the separating of large-density useful mines and increase the contacting probability of the materials smaller than output granularity and the sieve pore.

高频筛效率高、振幅小、筛分频率高。与普通筛分设备的原理不同，由于高频筛采用了高频率，一方面破坏了矿浆表面的张力和细粒物料在筛面上的高速振荡，加速了大密度有用矿物和析离作用，增加了小于分离粒度物料与筛孔接触的概率。

According to the heavy-liquid separation test, the embedded granularity survey of tungsten minerals and shaking-table test of ore sample grading, the -0.7 mm granularity is determined to be selected for the gravity concentration test. The ores will be smashed below -0.7 mm . The useful minerals should not be excessively smashed. The reasonable technology procedure of ore grinding can guarantee the indexes of gravity concentration in a long length.

依据重液分离试验结果、钨矿物嵌布粒度结果及矿样分级摇床试验结果，确定重选试验的入选粒度为-0.7mm ，欲将矿石碎至-0.7mm 以下，又使有用矿物尽可能减少过粉碎，选择合理的磨矿工艺流程是确保重选指标的关键。

Since silicate minerals are major rock-forming minerals and some silicate minerals have also very high value, so silicate minerals are the important research object of mineral processing, but because structue of silicate minerals is very complex, separation problem between silicate minerals and valuable minerals become one of difficult problems which puzzle engineers of mineral processing.

由于硅酸盐矿物是主要的造岩矿物，某些硅酸盐矿物本身还具有很高的价值，因此硅酸盐矿物是矿物加工研究的重要对象，但由于硅酸盐矿物结构复杂，故硅酸盐矿物与有用矿物之间的分离问题成为一直困扰矿物加工界的难题之一。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。