Japan's city gas sales fall 来自 掌桥科研 喜欢 0 阅读量: 3 作者: LW Group 摘要: Japanese sales of city gas fell by 5.5pc to 3.1bn m~3 in December compared with a year earlier, as milder-than-normal weather cut demand in all sectors of the economy. Household sector consumption ...
摘要: PROBLEM TO BE SOLVED: To provide a microwave-excited gas laser which has such a structure that uniform microwave excitation is possible and concentration of the electric discharge near to the wall of a laser tube is avoided.收藏 引用 批量引用 报错 分享 文库来源 求助全文 MICROWAVE-...
Method for dispersing gas into a molten metal A method of and apparatus for uniformly dispersing a gas into a molten metal bath by supplying gas to a rotatably mounted distributor located at a submerged zone beneath the bath surface while preventing physical contact between the gas ... EC ...