查询词典 nitrogen-free

The prevention and countermeasure of Nitrogen Trichloride fire explosion were discussed from the fire explosion fatalness,the harm,the reason of forming and gathering in the chlorin and alkali producing of Nitrogen Trichloride in the article.

赵秋德，三氯化氮火灾爆炸防治对策研究从三氯化氮的火灾爆炸危险性，三氯化氮的危害，三氯化氮在氯碱生产中生成和富集原因等方面入手，论述了三氯化氮火灾爆炸事故的防治对策。

We drawed a conclusion that both aboveground and belowground soil carbon input were critical to soil available nitrogen concentration, but they showed no relation with soil nitrogen net mineralization rate.

我们的结论是：土壤地上地下碳输入是影响土壤有效氮库储量的重要因素，但与土壤氮净矿化速率没有直接联系。

The result form the principal component analysis of pollution factors by SPSS shows that the increasing of sulphur dioxide, nitrogen oxide compound and falling dust particles results in the decrease of the Total Suspended Particles, and the aggrandizing of nitrogen oxide compound and TSP leads to the reduction of falling dust particles.

并应用SPSS软件时公路污染因素进行主成分分析，得出了二氧化硫、氮氧化物和尘降的增加会相应导致TSP减少，氮氧化物和TSP的增加会导致尘降减少的结论。

The results indicated that COD,the contents of suspension,ammoniated nitrogen and nitrated nitrogen were much lower than those of mono...

结果表明，循环水养殖系统内虾池水层悬浮物数量、COD值、氨态氮和硝酸态氮含量比对照组对虾单养池明显降低(P·01)。

The results showed that low temperature, high content of salt and acidic condition inhibited ammonifiers growth, and alkalescent condition showed little effect on ammonifiers. Ammonifying bacteria in Suzhou Creek could not use inorganic nitrogen and carbamide as nitrogen source. Additional carbon source have little effect on ammonifiers growth....

结果表明，低温、高盐度和酸性条件会抑制氨化菌的生长；中、碱性条件下，氨化菌仍能维持正常生长；苏州河的氨化菌无法以无机氮和尿素作为生长所需的氮源；在氮源充足条件下添加额外碳源，对氨化菌的生长无抑制作用；苏州河的环境条件有利于氨化菌的生长。

Other compounds include the nitrides, exceptionally hard materials made from nitrogen and a metal; cyanides; azides, used in detonators and percussion caps; and thousands of organic compounds containing nitrogen in functional groups or in a linear or ring structure.

其它的化合物包括氮化物，是由氮和金属生成的异常坚硬的材料；氰化物；叠氮化物，用作引爆剂和雷管；还有数千种含氮的有机化合物，以功能团或者线性或环状结构的形式存在。

The principle of work for DCP system: Releasing the high pressured Nitrogen from Nitrogen Cylinder to Reduction Valve and decompresses the pressure to the work pressure, then transport them into Powder Tank, amount of them are transported to the bottom of the tank to relax the powder.

系统工作原理是：利用氮气瓶组内的高压氮气经减压阀减压后，使氮气进入干粉罐，其中一部分被送到罐的底部，起到松散干粉灭火剂的作用。

The present invention is characterized in that the ammonium metatungstate powders and the cobltic-nitrate powders are respectively dissolved in the water and scattered in the liquid nitrogen to be pre-frozen using a nitrogen spray gun after being mixed and defecated, and then are placed in a freezedryer to be dried vacuumly and finally the powders are obtained. The nanometer powder i.e. the nano tungsten-cobalt composite powder is obtained by reducing the freeze-dried mixed powder in the atmosphere of hydrogen.

该微晶硬质合金的制备方法特征为：将偏钨酸铵粉末与硝酸高钴粉末分别溶于水中，混合澄清后使用氮气喷枪，将其分散在液氮中预冻后置于冻干机中进行真空干燥得到粉末；在氢气气氛中对冻干的混合粉末进行还原得到纳米粉体，即钨钴纳米复合粉体。

Nitrogen alloying process was set up by theories of nitrogen dissolved and degassed in stainless steel refined in AOD.

李永中，赵利荣，AOD炉冶炼含氮不锈钢氮合金化工艺开发

In order to improve nitrogen use efficiency and to reduce environmental pollution from excessive nitrogen application, soil nitrate-N content and accumulation in intercropped legume-maize under 0 and 225kghm^(-2) application were investigated in the Hexi Corridor of Gansu Province.

为提高氮肥利用效率，减少过量施用氮肥对环境造成的污染，本文以甘肃省河西灌区为试验地点，在0和225kghm^(-2)氮水平下，探讨了蚕豆、豌豆、大豆3种豆科作物与玉米间作对土壤硝态氮累积和分布的影响。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。