查询词典 acetylene

All sorts of specialized valves, flame arrestor and other accessories used for acetylene especially

乙炔专用的各类阀门、阻火器等配件；——各种气体充装汇流排。

For example, acetylene generated by the carbide process contains arsenical and sulphur compounds, and other impurities, which must be removed by scrubbingwith concentrated sulphuric acid before it is sufficiently pure for reaction with hydrochloric acid (此处有误,应为hydrochloride氯化氢) to produce dichloroethane.

例如，由碳化钙发生的乙炔气含有砷和硫的化合物以及其他的杂质，必须在乙炔有足够的纯度与氯化氢反应制造二氯乙烷之前，用浓硫酸洗去这些杂质。

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。

METHODS 3-methoxy-7α-methylestra-1,3,5(10)-trien-17β-ol was reducted with lithium and ammonia,then the intermediate was hydrolyzed in oxalic acid and reacted with malonic acid to get 3,3-dimethoxo-7α-methylestra-5(10)-en-17-ol(compound 4),which was oxidated by pyridium bichromate ,reacted with acetylene,and hydrolyzed in oxalic acid again to get the product tibolone.

方法以3-甲氧基-7α-甲基雌甾-1，3，5(10)-三烯-17β-羟基为起始原料经锂胺还原、草酸水解、缩酮化得3，3-二甲氧基-7α-甲基雌甾-5(10)-烯-17β-羟基(化合物4)，然后用温和的氧化剂重铬酸吡啶盐氧化、炔化、再水解得目的产物。

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。

As the designer and manufacturer of acetylene equipment, how to improve the utilization of calcium carbide is a permanent subject in our entire development, design and manufacturing process.

公司在设备设计制作过程中，从原材料、外配套部件的采购、制作工艺过程的检验及最终产品检验、试车等严格按质量保证体系的要求执行。

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。

In this paper, A lots of laboratory experiments using the acetylene inhibition method were carried to investigate the N2O production processes in chernozem soil of meadow grassland in Inner Mongolia.

以大量的室内模拟培养实验，以内蒙古温带草甸草原土壤为研究对象，利用AIM乙炔抑制法，模拟野外条件对原样土壤样品进行N2O产生过程进行研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。