sulphur free

The gas , which is sulphur-free , contains 89-99 % methane, up to 6 % ethane, and 3 % propane.

天然气不含硫, 含甲烷88-99%, 乙烷6%和丙烷3%.

N-octylic acid-N-( quinazolin-4-ketone ) ester is a sulphur-free and phosphorus-free additive.

正辛酸 -N- ( 喹唑啉 -4- 酮 ) 甲酯是一种无硫、无磷的添加剂.

preparation of sulphur-free expanded graphite by mixed acid system

混酸系无硫膨胀石墨的制备

development of sulphur-free expansive graphite with high oxidation resistance

无硫高抗氧化性可膨胀石墨制备

preparation of sulphur-free expanded graphite with high oxidation resistance

无硫高抗氧化性膨胀石墨的制备

study on preparation of sulphur-free expansible graphite by electrolysis method

电解法制备无硫可膨胀石墨研究

it appears that aq is still the most cost effective sulphur free accelerator for alkaline pulping, albeit of limited applications.

蒽醌似乎是无硫碱法制浆的最有效的催化剂，尽管应用还比较少。

the near-term climate benefits of a global dash for sulphur-free gas may thus be smaller than might be expected.

全球呼吁无硫矿产的开发，而无硫气体的排放所产生的环境效益可能比预期的小。

inclusion morphology control in medium-carbon calcium sulphur free-cutting steel

中碳钙硫易切削钢夹杂物形态控制

the to throttle orifices are designed to provide an accurate flow control on air and sulphur-free gases in combustion systems.

TO节流阀被设计成为空气或不含硫燃气的精确流量控制器。

Determination of free sulphur in tin sulphide with CS-444 high-frequency infrared spectrometry

CS-444高频红外仪测定硫化锑中的游离硫