soil fertility nitrogen

Polyphase Y-α/β-Sialon powders were prepared by SHS method, with St, Al, Y2O3 and Si3N4as raw materials under high nitrogen pressure.

本文通过组成设计，以Si、Al、Y2O3为原料，Si3N4为稀释剂，利用自蔓延高温合成法（SHS）制备了Y－α／β－Sialon粉末；并利用XRD、化学分析法分别研究了α－Sialon简称α′）、β－Sialon简称β′）相组成和游离硅含量；且详细讨论了氮气压力、稀释剂含量对生成物Y－α／β－Sialon中的α′、β′相及残余硅含量的影响。

The effect of Y-TZP (3mol% Y2O3) and nitrogen pressure on the sintering properties,phase composition, microstructure and mechanical properties of GPS Si3N4 Ceramic Materials with Y2O3 and Al2O3 as sintering aids were studied.

本文研究了Ｙ－ＴＺＰ（３ｍｏｌ％Ｙ２Ｏ３）和氮气压力对ＧＰＳＳｉ３Ｎ４陶瓷材料的烧结性能和力学性能、相组成及微观结构的影响，添加５ｗｔ％、１０ｗｔ％、１５ｗｔ％、２０ｗｔ％Ｙ－ＴＺＰ的氨化硅复合材料在１７７０～１８００℃，氮气压力分别为１ＭＰａ、２ＭＰａ、３ＭＰａ下烧成，获得相对密度＞９５％的烧结体。

Impacts of litter on soil nitrogen supply potential of the natural evergreen broadleaved forests after artificial regeneration in southern Sichuan Province;

川南天然常绿阔叶林人工更新后枯落物对土壤供氮潜力的影响

Influences of rhizobium inoculation on its growth,nodulation and nitrogen-fixing ability of Abrus cantoniensis;

接种根瘤菌对鸡骨草幼苗生长、结瘤和固氮能力的影响

( Caragana), and compared the main methods applied in rhizobial genetic analysis; The nitrogen fixation ability of root nodule is investigated on different development stage of Caragana microphylla Lam.

本论文综述了锦鸡儿根瘤菌的研究进展和根瘤菌遗传多样性的研究方法;对不同生育期小叶锦鸡儿根瘤固氮能力、不同树龄小叶锦鸡儿根瘤固氮能力进行调查研究;采用生理生化测定和16SrDNA PCR-RFLP分析探讨柠条根瘤菌的遗传多样性,为开发和利用这些根瘤菌种质资源提供科学依据。

Check the nitrogen pressure regularly, see the" accumulator instructions" below, and regarding charging equipement.

定期检查氮气压力，参阅下方的“储能器操作“，定期检查充压设备。

The atomizing nitrogen pressure is the key factor of influencing the super-tiny spherical aluminum powder rate in aluminum powder atomization process.

铝粉雾化生产过程中,雾化氮气压力是保障雾化铝粉的成型率和细粉率的关键参数。

Cause analysis and treatment of relatively low air supply pressure in nitrogen compressor

氮压机供气压力偏低的原因分析与处理

Nitrogen (IG-100) Extinguishing SystemFormula Derivation for Pressure Loss in Pipeline

氮气(IG100)气体灭火系统管道压力损失公式推导

Nitrogen narcosis (or nitrogen euphoria or raptures of the deep):Effects of Breathing nitrogen under increased pressure.

氮麻醉(亦称氮欣快或深水销魂):在压力增高的条件下吸入氮气所产生的生理效应。

miniaturized atmospheric pressure nitrogen laser

小型化大气压氮激光器

arterial-alveolar N2 difference

动脉血－肺泡气氮分压差

A pressure control manifold controls the pressure at which the gas is fed to the process. Processes that use nitrogen as a liquid do not require the vaporizers and pressure control manifold.

压力控制管控制着输入到过程的气体压力。使用液氮的过程不要求有汽化器和压力控制管。

This method is based on the kinetic model of nitrogen and can be used in pressure range1-100 mTorr.

这种方法基于氮等离子体动力学模型，适用于气压范围1-100毫托。

Pressurized with nitrogen or carbon dioxide gas, the powders are expelled through a discahrge hose.

施压力于氮或一氧化碳气体，干粉将从管中喷射而出。

Analysis and solution of relatively low vapor pressure while heating waste nitrogen for molecular sieve regeneration in winter

冬季分子筛再生污氮气加热用蒸汽压力低的分析与解决

Air pressure is measured by a barometer.

空气压力用气压计度量。

a manometer for measuring vapor pressure.

测量气体压力的压力计。

Influence of N_2 Partial Pressure on Field Emission Characteristics of BN Thin Films

氮气分压对氮化硼薄膜场发射特性的影响

Measurement of Trace Oxygen Content out of Nitrogen in Pressure-swing-adsorption Nitrogen Manufacture Process

变压吸附制氮工艺氮气中微量氧的测定

REASONS FOR FAILURE OF N_2 COMPRESSOR OPERATION AND COUNTERMEASURES

氮气压缩机运行故障原因分析及对策

Development of a triaxial gear-type nitrogen compressor with intermediate exhaust

中间抽气型三轴齿轮式氮压机的研发

pneumatic and hydraulic pressure regulator

气动及水压压力调节器