This large fireplace can produce 45, 000 BTU adjustable heat.这款大型壁炉可产生45, 000btu的可调节热量.He is already the general engineer of this low BTU water gas project.他已经是这个低热水煤气工程的总工程师了....
Wettable powders exhibited higher activity than emulsified formulations.可湿性粉剂的活性高于乳化制剂的活性.The principle and technology of emulsified wax with cheap material are presented.研究了以石蜡为原料,采用复配技术制得高分散乳化蜡的原理及工艺.The advantages of ...