查询词典 nitrogen-free

Results showed that there were no evident effects of different mechanical processes on the organic acid content(P＞0.05). The pH value of silages was all lower than 4.0 and the ratio of ammonia nitrogen to total nitrogen was all lower than 5.0, which improved the quality that all the silages in experiment were good. Though the effects of three different mechanical processes on the CP, CA and WSC contents of silages were evident, the silages were all excellent.

经不同切碎方式的各组青贮饲料的有机酸含量均无显著差异(P＞0.05)，pH值均在4.0以下，而且氨态氮与总氮的质量比也均在5.0以下，达到了优质青贮饲料的标准，虽然各青贮饲料的粗蛋白、粗灰分和可溶性碳水化合物含量有显著差异(P＜0.05)，但均为优质的青贮饲料。

After 5 months of ensiling,inoculating silage inoculant bacteria led to lower pH(P.05),lower ammonia nitrogen in total nitrogen(P.05) and content of butyric acid(P.01)compared to the untreated silages.

结果表明，青贮5个月后，添加青贮菌剂可以显著降低pH值(P＜0.05)、NH3/TN值(P＜0.05)，减少丁酸含量(P＜0.01)，有利于保存青贮物的营养成分，提高青贮品质。

Different fillers for wetlands are chosen by comparison and then matched, the following filler matching is achieved aiming at different influent: for wastewater with low nitrogen concentration and medium or high organic matter concentration, better removal efficiency is attained by combined fillers of coal cinder + pebble stone + gravel; for wastewater with high nitrogen concentration and low organic matter concentration, the optimum combination is fly ash brick crumbs + gravel.

针对不同的进水进行了湿地填料的比选与配伍，获得了适合于不同水质的填料配伍：对于含氮浓度低或中、高有机物浓度的污水，煤渣+砾石+碎石填料组合有较好的去除效果；对于含氮浓度高或有机物浓度低的污水，粉煤灰砖屑+碎石组合有较好的去除效果。

The results showed that the activities of urease, nitrate reductase, nitrite reductases and the yield of above ground plants were the highest with the fertilization pattern of taking 50 percent nitrogen from organic fertilizer and the other 50 percent nitrogen from urea.

结果表明：采用50%的N由有机肥提供，50%的N由尿素提供的施肥模式时，黑麦草根际土壤脲酶、硝酸还原酶、亚硝酸还原酶活性最强，黑麦草地上部产量最高。

Studying on the hydraulic pipelines of the nitrogen-inflating hydraulic pile hammer, establishes a optimization objective function for it with the relevant methods of parameter optimization, and uses Matlab to solve the model, gets a group of optimization pipelines size, and tests the validity of this method. So more efficiency methods for hydraulic system design of the nitrogen-inflating hydraulic pile hammer are provided.

以氮爆式液压打桩锤液压管道为研究对象，应用参数优化设计的相关方法建立氮爆式液压打桩锤管路优化分析的目标函数，并利用Matlab编程对模型进行求解，得出一组优化后的管道尺寸，并检验这种优化方法的有效性，为氮爆式液压打桩锤液压系统的设计开发提供了更为有效的方法。

The characteristics of the nitrogen releasing from different coal pyrolyzing in the tube furnace were studied. The effects of operating parameters, coal property on the characteristics of the nitrogen releasing was also discussed.

试验研究了烟煤、贫煤及其混煤在管式炉热解过程中氮的析出特性，探讨了煤质特性、运行参数对氮析出特性的影响。

These polyamides showed glass-transition temperatures between 230~251 oC and softening temperatures between 230~250 oC, 10% weight-loss temperatures in excess of 488 oC in nitrogen and air atmospheres, and char yields higher than 61% at 800 oC in nitrogen.

这些聚合物的玻璃转移温度在230~251 ℃之间和软化点温度范围在230~250 ℃之间，在氮气下或空气下的10 %重量损失皆在488 ℃以上，在氮气下加热至800 ℃时的焦炭残余率超过61 %，显示具有良好的热安定性。

The amount of nutrients derived from chemical fertilizer was increased. The nitrogen fertilizer application rates applied to wheat ranged from 103kg/hm〓 to 192kg/hm〓, from 99kg/hm〓 to 187kg/hm〓 for rape and from 173kg/hm〓 to 207kg/hm〓 for rice. The nitrogen fertilizer application rates applied to maize, potato and apple tree tended to increase, from 60kg/hm〓, 64kg/hm〓 and 299kg/hm〓 to 196kg/hm〓, 127kg/hm〓 and 126kg/hm〓 respectively.

化肥施用总量总体上为增加趋势，单位面积氮肥施用量为：小麦、油菜与水稻年际之间波动较大，其中小麦在103-192kg／hm〓间变化，1991年达到高峰，油菜在99-187kg／hm〓间变化，1992年达到高峰，水稻在173-207kg／hm〓间变化；玉米、马铃薯与苹果为增加趋势，分别从60kg／hm〓、64kg／hm〓y和299kg／hm〓增加到196kg／hm〓、127kg／hm〓和352kg／hm〓。

The coordinated COD of 3 and 4 can be replaced by carbon monoxide to yield the corresponding dicarbonyl species [(C,N-pyN^C-R) M2]BF4 (14, M= Rh; 15, M= Ir). Ligand substitution of 11a by phosphines and azide causes the de-complexation of pyridinyl-nitrogen donor to generate the corresponding carbene rhodium complexes [(C-pyN^C-Mes)RhPR3] (17a, R = Ph, 17b, R = Et) and [RhN3] (19), respectively, indicating the labile nature of steric-hindered pyridinyl-nitrogen donor.

螯合错合物的吡啶配位，可以容易被σ-予体，如卤离子、叠氮阴离子、膦试剂，置换；但是铑与铱金属螫合物与π-酸试剂，如一氧化碳、异腈，则发生COD被置的产物14a与16；与三甲基亚磷酸酯反应时，COD及吡啶均会被取代而得到单芽的三铑-碳烯错合物18；双膦化合物则会取代铑金属上全部的配位基。

If users need to protect the atmosphere workpiece reduce oxidation, can be installed in a stainless steel lid three Pentanes injection, infusion methanol or kerosene, to produce simple protective atmosphere, in the lower part of the furnace installation of nitrogen gas pipeline, nitrogen-protection or washed out into the flammable gas to prevent an explosion accident.

如用户提出需要气氛保护使工件减少氧化，可在炉盖上安装有不锈钢三头油注器，滴入甲醇或煤油，以产生简易保护气氛，在炉膛下部安装有氮气进气管道，可通入氮气保护或冲散可燃性气体，以防发生爆炸事故。

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。