Along with nitrogen and iron, phosphorous is a key limiting nutrient in the ocean.
磷和氮、铁都是海洋有限的重要营养元素。
When the chemicals react with nitrogen oxide--found in pollution from cars--they form ozone, a much bigger health threat to humans and animals.
然后，当这些化学物质与氮氧化合物(存在于汽车排放的废气中)发生化学反应时，就会形成臭氧，这会对人类和动物的健康构成更大的威胁。
In case of emergency that can cause a fire, oil from the transformer goes to a separate green pipe shown in picture 11 and the transformer is filled with nitrogen.
为防止突发事件造成的火灾，变压器中的油将流入如图片11所示的一个单独的绿管，变压器内会充满氮气。
Sample gas tubes are flushed with nitrogen.
采气管得用氮气吹扫。
Tripodal compounds with nitrogen atom at their centers;
以氮原子为中心的三脚架结构化合物；
Heterocyclic compounds with nitrogen heteroatom (s) only.
仅含有氮杂原子的杂环化合物。
Burning magnesium reacts with nitrogen gas to give solid magnesium nitride.
燃烧的镁与氮反应，生成固态氮化镁。
The instrument tapping are continually flushed with nitrogen to avoid fouling.
仪表引压线连续吹氮气，以免堵塞。
The furfural solvent recovery with nitrogen stripping was studied by experiment.
进行了用氮气汽提回收糠醛溶剂的实验室研究。
A better result is got when cleaning sapphire by the plasma of hydrogen mixed with nitrogen.
实验中采用了氢氮混合等离子体清洗的方法，提高了清洗的质量。
The variation of structure information of tungsten nitride (WNx) with nitrogen con - tent is observed.
报道了扩散阻挡层材料氮化钨的结构特性随组分变化的情况。
Besides, calcium carbide can react with nitrogen to generate lime nitrogen for agricultural fertilizer.
电石与氮气作用生成石灰氮可作农业肥料。
Record of nitrogen filling shall be kept for transformer transported with nitrogen during transportation.
充氮运输的变压器，在运输途中应做好充氮纪录。
Low - temperature boronizing base was studied for card wires with nitrogen atmosphere as outer layer protection.
对针布齿条氮基气氛外层保护低温渗硼的方法进行了研究。
Objective: To manufacture a simple sample enrichment appliance with nitrogen gas blowing needle and its application.
目的：一种氮气针吹(NNB)药物试样富集装置的研制和应用。
The results showed that the amount of absorbed nitrogen in different forms varied with nitrogen and potassium levels.
结果表明，水稻对铵态氮和硝态氮的吸收与养分供应状况有很大关系。
The design features of roller hearth furnace heat treat production line with nitrogen based atmosphere are introduced.
介绍氮基气氛辊底炉热处理生产线的设计特点。
Gas flow, commissioning process and corresponding parameters of the commissioning with nitrogen are introduced in details.
详细介绍了氮气试车的气体流路、试车过程及试车过程中的参数。
Types of fertilizer with nitrogen fertilizer, per mu can be with human excrement urine thin 1500 ~ 2000 kg, 5 ~ 10 kg urea.
肥料种类以氮肥为主，每次每亩可施有稀薄的人粪尿液1500 ~ 2000公斤，加入尿素5 ~10公斤。
In step (C), a 300-gallon reaCtion vessel was Charged with 300 kg of phosphorus oxyChloride (6), Cooled, and blanketed with nitrogen.
步骤(c)，往300加仑的反应容器里加入300千克三氯氧化磷(6)，冷却，并覆以氮气。
The passive systems consist of large volume tanks (accumulators) which are filled with borated water and pressurized with nitrogen gas.
非能动的系统由大容积的水箱(安注箱)组成，箱内装有硼水，上部由带压的氮气覆盖。
The product of gasification is so-called synthesis gas or syngas which is composed mostly of carbon monoxide and hydrogen undiluted with nitrogen.
这个气化过程的产物为合成气，成份主要是一氧化碳与氢，并不含氮。
Potassium is a major nutrient in higher plants, which together with nitrogen and phosphorus is known as the "three essential factors" of plant nutrition.
钾是植物生长发育所必需的大量元素，是与氮、磷并列的植物营养的“三大要素”之一。
Some of the carbon therefore ends up as soot, rather than carbon dioxide, and oxygen that should be combining with carbon combines with nitrogen from the air instead.
其中的一些碳最终以烟雾而非二氧化碳的形式排放出来，而那些本该与碳结合的氧分子则转而与空气中的氮结合。
It produces leaves that farmers can feed to cattle, and it has roots that enrich the soil with nitrogen. The trees protect crops from wind and prevent soil erosion.
它长出的叶子可以让农民用来喂牛，其树根中的氮可以增强土壤肥力。
It produces leaves that farmers can feed to cattle, and it has roots that enrich the soil with nitrogen. The trees protect crops from wind and prevent soil erosion.
它长出的叶子可以让农民用来喂牛，其树根中的氮可以增强土壤肥力。
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