查询词典 hydrogen arsenide

The results show that hydrogen addition can extend the lean operation limit,increase burn rate and decrease the spark advance for best torque.

而在MBT时，掺氢可以一定程度上提高发动机的指示热效率，降低未燃CH4和CO的排放，改善NOx与未燃碳氢(主要为CH4)的trade-off关系。

The influences of temperature, pressure, space velocity and ratio of hydrogen to nitrogen on the activity of ruthenium based ammonia synthesis catalyst were investigated.

用氨合成催化剂性能评价装置，研究了反应温度，压力，空速和氢氮比对以活性炭为载体的钌基氨合成催化剂活性的影响。

The epoxidation of α-pinene and β-pinene by 50% hydrogen peroxide and a small amount of sodium tungstate, in the presence of quaternary ammonium salt A-1 as a phase transfer catalyst, is carried out.

摘 要：采用季铵盐A-1作相转移催化剂，质量分数为50%的H2O2作氧化剂，三氯甲烷作溶剂，在加入少量钨酸钠的条件下，实现了α-蒎烯和β-蒎烯的环氧化反应。

Epoxysuccinic acid was synthesized from maleic anhydride using sodium tungstate as catalyst and hydrogen peroxide as oxidizer and was characterized by IR and 13 C NMR.

以马来酐为原料，钨酸钠为催化剂，双氧水为氧化剂，合成了环氧琥珀酸，并对其进行了红外、13C核磁表征。

Formaldehyde ; sodium hydrogen sulphite ; inhibitor

甲醛；亚硫酸氢钠复合物；抑制剂

A new method was introduced in this paper:the practability of adopting sodium sulphide instead of hydrogen sulphide for colorific agent has been studied and determinated the optium test condition.

研究了采用硫化钠溶液取代硫化氢作为显色剂的可行性，并确定了最佳的测定条件。

Objective To investigate the protective effect of Sodium Ferulae on hydrogen peroxide (H2O2)-induced PIECs apoptosis.

目的 研究过氧化氢(H2O2)诱导内皮细胞凋亡及阿魏酸钠的抗氧化应激和抗内皮细胞凋亡的作用机制。

The second step is carried out by treating the bleached pulp obtained from the first step, with a solution of sodium hydroxide and hydrogen peroxide.

通过用氢氧化钠和过氧化氢的溶液处理第一步中获得的漂白纸浆而进行第二步。

The experimental results showed that the optimized parameters for isolation of hemicellulose was: 2% hydrogen peroxide, 2% sodium hydroxide, heating time 4h, reaction temperature 75℃.

结果表明，半纤维素分离提取的优化参数为：2%过氧化氢，2%氢氧化钠，加热时间4h，反应温度75℃。

Poplar was pretreated separately with hot water,sodium hydroxide and hydrogen peroxide.

分别采用热水浸提、烧碱、过氧化氢等试剂对染色前的杨木进行染色前处理。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48