查询词典 pitch-dark

The change in group component of the coal tar pitch road binder modified by tired rubber with reaction time and its modified mechanism were studied.

研究了煤沥青在供氢剂的作用下，族组成随反应时间的变化规律及其受氢改质机理。

To decrease the cost of C/C composites, the surfactants are used to improve the impregnation performance of coal tar pitch.

为降低C/C复合材料制造成本，采用表面活性剂对煤沥青进行改性。

Polarized microscope is employed to study the optical structure of pyrolyzed substrance of the modified coal tar pitch.

采用偏光显微镜研究DVB改性煤沥青的光学结构；采用 FT- IR和元素分析研究改性煤沥青的热解过程。

The production with plain carbon, can not combine the warm coal pitch in the pharmaceutical.

碳素的生产，离不开结合剂中温煤沥青。

Bulk graphite was prepared from starting materials of calcined coke and coal tar pitch by the hot pressing process.

以煅后石油焦和煤沥青为基本原料，采用热压工艺制备了一系列石墨材料。

In the paper, the conversion and kinetics of coal tar pitch are studied and conversion kinetics parameters of the mesophase are measured.

本文研究了煤焦油沥青中间相转化及动力学，测定了中间相转化动力学参数。

The results show that the content of Co metal in composite microbeads increases with the increasing of the ratio of cobalt acetate to coal tar pitch in the starting material.

研究结果表明，随着原料中乙酸钴含量的增加，制备出的复合微球钴含量增加。

Coal tar pitch reduced coke reactivity and increased coke strength after reaction by means of increasing coke optical anisotropy.

煤沥青通过增大焦炭光学组织各向异性程度，使焦炭的反应性降低，反应后强度提高。

The grinding characteristics of coal tar pitch were analyzed by contrast of particle size distribution under different effects of grinding agents, and the grinding process parameters for CTPWS preparation have been determined.

通过煤沥青在不同助磨剂条件下的粒级分布率比较，分析了煤沥青的研磨特性，确定了煤沥青水浆制备的磨矿工艺参数。

Ground subsidence caused by underground coal mining is a space-time process. Coal seam pitch is one of the most important factor which determine movement and failure forms of overlying rock and the level of ground movement and deformation.

地下煤层采出后引起的地表沉陷是一个时间和空间过程，煤系地层倾角是决定上覆岩层的移动和破坏形式及地表移动与变形程度的重要因素之一。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。