乙炔

In order to select high nitrogen-fixing azotobacter strains, nitrogenase activity of 13 strains separated in the rhizosphere in Gansu non-leguminous crop fields were measured by acetylene reduction method. Also the fertilization effect of the strains on spring wheat was investigated via pot experiment.

为挑选具有高固氮能力的自生固氮菌菌株，用乙炔还原法对甘肃省春小麦和玉米等非豆科作物根际土壤中分离所得的13株菌进行固氮酶活性测定，并通过盆栽试验对其进行春小麦肥效试验。

Diphenylacetylene and benzophenone have good radiation protection effects due to their special radiation protection mechanism.

二苯乙炔和二苯甲酮由于其独特的辐射保护机理而具有很好的辐射保护效果。

While we waited for jeune to set up the blowtorch, Monsieur Menicucci delivered the first of a series of lectures and collected pens閑s which I would listen to with increasing enjoyment throughout the coming year.

在等候学徒准备乙炔焊枪的时候，曼尼古希先生对我们发表了第一场演讲。在以后的一年中，类似形式的演讲他又陆续发表了多场，而我听讲的兴趣也愈来愈大。

Through absorption of bromine vapor, the electrical conductivity of poly was enhanced by 1012 times.

通过溴蒸气的吸附，聚苯乙炔的电导率比吸溴前提高近12个数量级。

We gained the ethynylferrocene in high yield by the the reaction of triphenylphosphine with chloroform or bromoform in the presence of KOBu~t to give witting reagent, which reacted with formylferrocene and then followed by n-butyllithium dehydrohalogenation.

在本论文的第二部分，我们用三苯基磷与溴仿或氯仿在叔丁醇钾作用下，制得三苯基磷甲叉烯，然后与二茂铁甲醛反应，得到二氯取代烯烃，在正丁基锂作用下得到二茂铁乙炔。

Currently 14 existing products, according to campaign is divided into four categories: one category is phosphorus chemical series, to yellow phosphorus, phosphoric acid, sodium tripolyphosphate-based, phosphoric acid, sodium tripolyphosphate of the 50,000 tons / Year; second category is the chlor-alkali series, caustic soda, hydrochloric acid, liquid chlorine, hydrazine hydrate, polyethylene butyral mainly three types of products is manganese, manganese powder, manganese ingots, mainly Electrolytic Manganese, One Electrolytic Manganese annual production capacity of 10,000 tons, manganese ingot processing capacity 15,000 tons / year; four other products, including oxygen, acetylene, such as selenium dioxide.

目前现有产品14个，按系列分为四大类：一类是磷化工系列，以黄磷、磷酸、三聚磷酸钠为主，其中磷酸、三聚磷酸钠各5万吨／年；二类是氯碱系列，以烧碱、盐酸、液氯、水合肼、聚乙烯缩丁醛为主；三类是锰产品系列，以锰粉、锰锭、电解锰为主，其中电解锰年生产能力为1万吨，锰锭加工能力1.5万吨／年；四类是其他产品包括氧气、乙炔、二氧化硒等。

Acetylene is manufactured by the reaction of water with calcium carbide.

通过水同电石的反应生产乙炔。

Calcium carbide and acetylene distillation process was simulated and optimized, which is instructive for the industrial production and expansion of current VCM equipment.

电石乙炔法分馏系统的工艺流程的全过程模拟和优化，对工业生产和VCM装置的扩建具有实际指导作用。

The process of synthetical harness of carbide slag slurry in PVC production by calcium carbide acetylene method was introduced.

介绍了综合治理电石乙炔法生产 PV C 时产生电石渣浆的工艺技术。

It plans to set up 2 calcium carbide furnaces with 165000 KVA, and a calcium carbide furnace with 24000 KVA.

电石主要用于生产PVC，70%的电石供给电石乙炔法生产 PVC的生产厂家。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。