Always use an external source of nitrogen or air for this purpose.
做类似事情时，只能用氮气或空气作为外在气源。
Urea is commonly used as the source of nitrogen in foliage sprays.
尿素作为氮素给源普遍地应用于叶面喷布。
Manure has become a minor source of nitrogen in all major agricultural countries.
在主要的农业国家动物粪便已经不是氮肥的主要来源。
The leaf was the major storage organ for nitrogen and the source of nitrogen for grain filling.
叶片是前期组织氮素的重要贮存器官和籽粒灌浆中氮素的主要供给源。
Another source of nitrogen pollution comes from fossil fuels, which produce nitrogen oxides when they are burnt.
另一种氮污染的来源为矿物燃料，矿物燃料燃烧时，会产生氮氧化物。
Description Ammonia (NH 3) or its ion form ammonium (NH 4 +) is an important source of nitrogen for living systems.
产品说明对生命机体来说氨(NH3)或铵离子形式(NH4 +)是氮的重要来源。
Effects of nitrogen application amounts on source of nitrogen accumulation and yields of two peanut cultivars were studied by using the method of pot culture and 15n tracer.
利用盆栽试验和15n示踪技术，研究了不同施氮量对两个花生品种氮素积累来源和产量的影响。
The product at the front is exhibiting a lack of growth compared with all the others. This was identified at the time as being the lack of nitrogen because a ‘wrong’ source had been used.
与其它相对，最前面的长得最矮小，这时候的它被认定是由于使用“错误肥料”而造成缺氮的表现。
Biomass biomass boiler precipitator fuel is a renewable source of carbon, with great production, wide distribution, low sulfur, low nitrogen, fast growth, low carbon dioxide emissions.
生物质锅炉除尘器生物质燃料是可再生的碳源，具产量巨大、分布广泛、低硫、低氮、生长快、二氧化碳排放低的特点。
The results of the experiments showed Peptone was the best nitrogen source in solid culturate, the second was yeast extract.
结果表明；在固体培养中，病菌对氮源的利用以蛋白胨为最好，其次为酵母膏。
The effects of inoculums, fermentation temperature and time, and nitrogen source on production of citric acid from aged paddy rice by liquid-state fermentation of Aspergillus niger were studied.
研究了接种量、发酵温度与时间、氮源等因素对以陈化稻米为原料，黑曲霉液态发酵法生产柠檬酸的影响，并优化了工艺。
The biomass of Chlorella vulgaris was increased without influence on its chlorophyll content when nitrate was used as nitrogen source.
在以硝酸盐为氮源时，谷氨酸可增加小球藻的生物量，对叶绿素含量无明显影响。
The beef extract, a beef derivative, is a source of organic carbon, nitrogen, vitamins, and inorganic salts.
牛肉萃取物是一种牛肉衍生制品，可以作为有机碳、氮、维生素与无机盐类的一个来源。
The results showed that starch as carbon source, and casein and soybean powder as nitrogen source, o methoxyphenol and vanillin of suitable concentration had good influence on laccase production.
结果表明，淀粉作碳源、干酪素作氮源有利于漆酶的分泌，适宜浓度的愈创木酚和香兰素等对漆酶的产生有一定的作用；
The effect of nitrogen source on the sporulation was complex.
氮源对孢子产生的影响较为复杂。
The production of erythromycin in the shake flask was significantly influenced by adding different kinds of organic nitrogen source (e. g. amino acids).
红色糖多孢菌的摇瓶培养基中使用不同有机氮源时红霉素的效价明显不同。
The results indicate that the normal operation of reactor only needs the lower concentration of carbon source and nitrogen source to obtain perfect result.
结果表明，较低浓度的碳源和氮源即可维持反应器的正常运行，达到理想的脱色效果；
Result:The results showed that suitable nitrogen source rate can improve level of fermentation.
结果：试验表明，合适的氮源比例能够提高发酵水平。
Results: the production of c. neoformans melanin was affected by various factors, in which nitrogen source and glucose affected it obviously.
结果：新生隐球菌黑色素的产生受多种因素的影响，其中以氮源、葡萄糖和温度的影响最为明显。
A new kind of nitrogenous product Bionitrogen was tested as a supplemented nitrogen source instead of the corn protein in penicillin fermentation.
生物氮素作为微生物发酵的一种新型氮源，我们首次在青霉素发酵生产上应用。
The results showed: nitrogen source and precursor feeding resulted in significant increase of taxol production.
结果表明，一定氮源和前体饲喂对紫杉醇产量提高有显著促进作用。
Effects of initial carbon source concentration and nitrogen source concentration on D-ribose fermentation and feeding process in flask.
初始碳氮源浓度对d -核糖发酵的影响及摇瓶补料工艺。
The system of nitrogen source is designed for the need of pure nitrogen of the large space environment simulating equipment in our country.
氮气源系统是根据我国大型空间环境模拟设备对纯净氮气的需要而设计的。
The best carbon source is glucose, and the best nitrogen sources are peptone, beef extract paste and wheat bran. The most favorable ratio of C/N is 40: 1.
结果表明：最适宜的碳源是葡萄糖，最适宜的氮源是蛋白胨、麦麸、牛肉膏，最适宜的碳氮比是40：1。
To exclude higher oxygen concentration in an equipment with an potential source of ignition we use Nitrogen to dilute the air in the vessel.
避免设备内氧气浓度过高以及火源的存在，使用氮气稀释釜内空气。
Effects of sugar content, carbon source, nitrogen source and precursor feeding on taxol production of endophytic fungus in liquid fermentation were studied .
研究了在一株产紫杉醇真菌的发酵培养中，初始糖浓度、碳源、氮源和前体饲喂对生物量和紫杉醇合成的影响。
The step-fed sequencing batch reactor (SFSBR) is a new type of the enhanced nitrogen removal system, characterized by a multiple anoxic feeding for supplying the organic carbon source to denitrifiers.
分步进水序批式反应器（SFSBR）是一种依靠多步缺氧进水补充反硝化碳源的生物脱氮强化工艺。
Hydorlyzed cottonseed protein can be used as the nitrogen source of fermentation medium.
棉籽水解蛋白可作为菌体发酵氮源。
To study the influence of fermented culture mediums with different nitrogen sources on the growth of HD-1, nut cake and non-salt fish meal were chosed as the nitrogen source.
为了研究不同氮源的发酵培养对HD-1生长的影响，我们选用了花生饼和无盐鱼粉作为氮源。
Its main effective components are carbon source material, nitrogen source material, and mineral elements. It contains 0.5-2.5% of tea cake powder.
其有效成分主要为碳源物质，氮源物质和矿质元素，由至少一种原料组成的氮源物质中具有在培养基中含量为0.5 ~ 2.5%的茶枯粉。
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