含燧石的

After superimposition of magmatic mineralization, chert-bearing water-rich carbonates, such as dolomite, ankerite and/or calcite were turned into serpentitite-talcite; greite and pyrite into pyrrhotite.

经过岩浆叠加改造，底部的纹层状含燧石富水高镁碳酸盐岩变为蛇纹石岩；胶黄铁矿、黄铁矿大部分变为磁黄铁矿。

A variety of chert containing magnetite and hematite; mined as a low-grade iron ore.

一种含磁铁矿和赤铁矿的燧石，作为一种低等的铁矿石被开采。

Diamond bits require lower WOB,high rotary speed and small flow rate,useful for hole straightening and inclining prevention,and it can be used high-density drilling fluids.But diamond bits can′t effectively drill heterogeneous hard formations which contain chert,pyrite and silicastone.

金刚石钻头的钻压小、转速高、排量小，有利于纠斜防斜，可在高密度钻井液条件下使用，但它不能有效地钻进含燧石、黄铁矿和硅质的不均质坚硬地层。

On the basis of the performance of the pavement, three typical samples of aggregates for wearing course are tested to determine squeezing and filling effects between coarse aggregate and fine aggregate, medium effects between asphalt cement and mineral filling material. Meanwhile, matrix analysis method is adopted to establish prediction model for properties of asphalt mixture and complete procedure of a new type asphalt mixture design method is proposed according to volumetric design method and requirements on properties of asphalt mixture and the method has applied for national patent.

研究建立了玄武岩、锰铁合金渣和含燧石碳酸盐岩三类路面耐磨集料体系，以路面性能要求为基础，试验考察了集料的嵌挤效应与填充效应以及沥青胶浆的介质效应，以体积设计法为基础，应用数值分析方法，提出了新型沥青混合料设计方法，并已申请了国家发明专利。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。