查询词典 pitch-blackness

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。

Medium temperature pitch mixed into coal coking test was carried out in test coking oven.

利用试验焦炉进行了中温沥青配煤炼焦试验，结果表明，中温沥青在配煤炼焦时可以起到粘结剂的作用，配入适量的中温沥青后焦炭质量明显提高。

It was found that coal tar pitch could not be used as-received to prepare useful carbon foams because of their higher quinoline insoluble fraction.

结果发现，由于煤焦油沥青不含中间相，且QI含量较高，导致在实验条件下不能直接制备出合格的炭泡沫。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。