English translation for "低煤级"

lower rank

Example Sentences:

	1.	First of all , the substance foundation of low - rank coal cbm generation in the basin has been discussed according to the development of coal reservoir , coal petrography , coal properties , coal rank , coal genera , coal facies feature of lower jurassic badaowan formation ( jlb ) and middle jurassic xishanyao formation ( j2x ) 首先，根据下侏罗统八道湾组( j _ 1b )和中侏罗统西山窑组( j _ 2x )煤储层发育、煤岩、煤质、煤级、煤类、煤相地质特征论述了本区低煤级煤层气生成的物质基础。
	2.	Advanced instrument and testing techniques including adopting mercury injection apparatus , specific surface analyses apparatus , porosity - permeability measurement apparatus , isothermal adsorption instrument and drill core flow experiment system , etc . , are also adopted . on the basis of study on gas zoning , known cbm show and its component , generating mechanism of low coal rank cbm are discussed . the author pointed out that generated cbm should consist of primary biogenic methane gas in lignite stage , thermogenic methane gas in long - flame coal to gas / fat coal stage , and deuterogenic biogenic methane gas in coal seam imbedded stage 在本区瓦斯分带、已知煤层气显示及其组分研究基础上，探讨了低煤级煤层气的生成机制，指出生成的煤层气应包括褐煤阶段的原生生物甲烷气、长焰煤?气肥煤阶段的热成因甲烷气和煤层埋藏阶段的次生生物甲烷气三种成因甲烷气体；进而论述了煤储层含气饱和度、临界解吸压力、临储压力比、地解压差等甲烷解吸特征，实测与理论含气量、煤层气资源量与资源丰度等煤储层含气性特征。
	3.	On the basis of surveying on research actuality and advance of coalbed methane reservoirs geology , regional geological background and sedimentary characteristic of jurassic coal reservoirs , this dissertation proceeded integrative study on low - rank coal reservoirs and preliminary probing into its coalbed methane pool forming mechanism in zhungaer basin , northwest china 本文在国内外煤层气储层地质研究现状及进展、准噶尔盆地侏罗系煤储层地质背景和沉积特征调研基础上，对低煤级煤储层特征及其富气成藏机制进行了初步研究。

Similar Words：

"低马赫数" English translation, "低马赫数区" English translation, "低麦角碱" English translation, "低卖高" English translation, "低脉冲频率" English translation, "低煤阶" English translation, "低镁血" English translation, "低镁血症" English translation, "低镁血症,血镁过少" English translation, "低镁血症-高尿钙" English translation