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The major bacteria of the activate sludge were identified to be Vorticalla convalleria and Aspidiacs spp., both were considered as responding to denitrification of high nitrate-N of lead azide wastewater.

中文摘要为了探讨含有高浓度硝基氮之叠氮化铅制程废水生物脱氮效能,本研究利用统一食品公司所提供的厌氧污泥进行脱氮菌的培养,经过了15天的培养其培养出大部份都是钟口菌属Vorticella convalleria ,和一小部份则为纤毛虫属aspidisca sp。,来进行含有高浓度硝基氮的氮化铅制程废水生物处理过程中的脱氮作用之研究。

Nitrogen is mainly present in organic forms in soils even though most plants absorb inorganic nitrogen, which accounts proximately 1% of total N in soils.

土壤氮库中的氮主要以有机氮的形式存在,无机氮仅占土壤总氮的1%,而植物所吸收的氮几乎都是无机形式。

The organic matter and total N"s variation of the upper and below layer were identical whose range remained constant in each season; the soil NlV-N content in the upper layer was higher than hi the below in Spring and Autumn, but this change was complicated hi Summer and Winter owing to different forest measures; the peaks and valleys of NCV-N hi the upper and below soil layer appeared in the same tune, but the change showed no laws in different forest lands; the variation of the available N was approximate to NHU+-N; the range of each layer"s change of the hydrolysable N was identical that appearedparallel lines in figure.

土壤上下层有机质、全氮量的时间变化趋势相同,层间差异量基本维持在恒量水平;春、秋季铵态氮含量上层明显高于下层,夏、冬季随还林措施不同而表现复杂;上下层硝态氮波谷、波峰的出现时间大致相同,但不同还林地的变化规律较复杂;速效氮的变化趋势与铵态氮类似;土壤上下层水解氮的时间变化几乎同步,在图上表现为两条近似的平行线。

Application of organic fertilizer decreased the proportion of total hydrolyzable N fraction and hydrolyzable NH4-N fraction, and increased the proportion of nonhydrolyzable N fraction and unidentified hydrolyzable N fraction, respectively.

比较有机区与惯行区,显示施有机肥料会使可水解全氮所占比例下降,而不可水解氮的比例上升,水解性铵态氮的比例下降,不可辨认的水解性氮所占比例增加。显示所施入之有机肥主要补充至不可水解氮、不可辨认的水解性氮划份。

Cumulative NH4+-N is a good evaluating index of soil N-supplying not only for the first season crop, but also for two successive season crops. ND is more correct in revealing the potential mineralizable nitrogen when SON was regarded as mineralized N, although cumulative SON alone is not a good index for the potential of mineralizable nitrogen. And cumulative TSN could also be taken as an index for the potential mineralizable nitrogen to some extent.

淹水培养期间铵态氮累积量是评价可矿化氮的较好指标,不仅适宜于第一季作物,而且也适用于连续两季作物;SON累积量不能单独作为;SON累积量不能单独作为反映可矿化氮的指标,但用ND反映土壤可矿化氮潜势时,包括SON后更加准确;TSN在一定程度上能够反映土壤可矿化氮。

Grain quality affected by N application and plant density could directly influence malting quality. Grain protein content was negatively correlated to steeping degree and steeping rate, and positively related to saccharogenic power. The relationship of grain protein content to a -Amino-nitrogen content and kolbach index could be expressed with a quadratic curve equation, respectively. The greatest decomposition rate of protein might be achieved when grain protein content was 11-12%.

施氮量、氮肥运筹比例和密度对籽粒品质的影响直接影响着麦芽品质,籽粒蛋白质含量下降,浸麦度和浸出率上升,糖化力下降,籽粒蛋白质含量和库值、氨基氮呈二次曲线关系,籽粒蛋白质含量在11%一12%时,其蛋白质分解速率最快,麦芽总氮与籽粒总氮呈极显著的正相关关系,在麦芽的生产过程中氮的消耗率与籽粒总氮为极显著的负相关关系。

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。

Results show that microbial biomass carbon and microbial biomass nitrogen in fertilized soil peak in the first several days, and then decline. Incubating both sweet maize straw and white clover have the highest yield, maxima of 529.57 mgkg^(-1) and 75.50 mgkg^(-1) respectively. They also release respired CO2 the most among all treated soils. The best mineral nitrogen release is in white clover incubating, with a maximum of 29.81 mgkg^(-1) under a 26-day culture, and then keeping 1.60 times the control and reaching 2.48 times at 80-day culture. Sweet maize incubating has the least mineral nitrogen release. It is 13%~53% of the control under a 26-day culture, with a maximum of 7.51 mg kg^(-1). Soil nitrogen mineralization is insignificant under sweet maize incubating with urea in short-term.

研究发现,各施肥处理的土壤微生物量碳、微生物量氮均在培养前期出现峰值,后期平稳降低;甜玉米桔秆和白三叶草绿肥同时还田的土壤微生物量碳、微生物量氮在各培养时期均最大,峰值分别达529.57 mgkg^(-1),和75.50 mgkg^(-1),土壤呼吸产生的CO2最多;白三叶草绿肥单独还田有利于土壤无机氮的释放,培养第26d无机氮达到最大值,为29.81 mgkg^(-1),之后一直在对照处理的1.60倍以上,第80d达到2.48倍;甜玉米秸秆单独还田不利于土壤无机氮的释放,培养的第26d至结束,甜玉米秸秆处理的无机氮为对照的13%~53%,最大为751 mgkg^(-1);甜玉米秸秆配施尿素,短期内不利于土壤无机氮矿化。

Results show that microbial biomass carbon and microbial biomass nitrogen in fertilized soil peak in the first several days, and then decline. Intercropping Incubating both sweet maize straw and white clover have the highest yield, maxima of 529.57 mg·kg-1 and 75.50 mg·kg-1 respectively. They also release the most respired CO2 the most among all treated soils. The best mineral nitrogen release is in white clover intercroppingincubating, with a maximum of 29.81 mg·kg-1 under a 26-day culture, and then keeping 1.60 times the control and reaching 2.48 times at 80-day culture. Sweet maize incubatingintercropping has the least mineral nitrogen release. It is 13%~53% of the control under a 26-day culture, with a maximum of 7.51 mg·kg-1. Soil nitrogen mineralizatiomineralization is insignificant under sweet maize incubatingintercropping with urea in short-term.

研究发现,各施肥处理的土壤微生物量碳、微生物量氮均在培养前期出现峰值,后期平稳降低;甜玉米秸秆和白三叶草绿肥同时还田的土壤微生物量碳、微生物量氮在各培养时期均最大,峰值分别达529.57 mg·kg-1和75.50 mg·kg-1,土壤呼吸产生的CO2最多;白三叶草绿肥单独还田有利于土壤无机氮的释放,培养第26 d 无机氮达到最大值,为29.81 mg·kg-1,之后一直在对照处理的1.60倍以上,第80 d达到2.48倍;甜玉米秸秆单独还田不利于土壤无机氮的释放,培养的第26 d至结束,甜玉米秸秆处理的无机氮为对照的13%~53%,最大为7.51 mg·kg-1;甜玉米秸秆配施尿素,短期内不利于土壤无机氮矿化。

Influence of pretreatment process on nitrogen content of soybean protein fibre;2. Genotype differences of nitrogen content in cultivated rice seed.;3. Reasons affecting nitrogen content of lime nitrogen, which is produced by converter process is analyzed.

分析了转炉法生产石灰氮中影响石灰氮含氮量的原因,通过合理掺用催化剂、调整炉料细度、改造原料配料系统等方法,优化了生产工艺条件,稳定了炉料配比以及炉料的发气量,提高了石灰氮的含氮量,氮的质量分数稳定在22。

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