Combined with the present status of coal market and the situation of simple product of the coal enterprises, the paper analyzes the future developing trend of coal market.
紧密结合当前煤炭市场实际，针对煤炭产品单一的现状，分析了煤炭企业今后的发展趋势。
In this paper, the present application status of infrared passive-active alarm is generally described, and their market is analysed.
本文介绍了主、被动式红外报警器应用现状及其市场分析。
The present article describe the USES, market application status, main industrial process and technology main points in domestic and on abroad on p-dichlorobenzene.
介绍了国内外对二氯苯的用途、市场应用状况以及工业化的主要工艺和技术要点。
应用推荐