化学过程

Besides of use of resistance cultivars,agricultural practice and physical measurement,use of chemical nematicides and fumigants is an important means of controlling root-knot nematodes.

传统的熏蒸性和非熏蒸性化学杀线虫剂多为高毒、高残留的农药，对环境污染严重，使用过程中对人、畜也不安全，其中许多杀线虫剂已被陆续禁用。

Chemical analysis of gas conditioning plant solutions has always been regarded as a significant activity in the operation of such plants.

天然气净化厂工艺解决方案中的化学分析一直被认为是净化厂工艺运行过程中的一项重要内容。

Aiming at the condition that the power of air conditioning in locomotive is especial, the cooling medium is mostly chemicals and the systems are complex, in this paper, a wholly fresh air scheme is brought up for air conditioning system in locomotive drive-cab on the basis of the intermittent working of the air compressor, taking high-pressure air as power source and combining compressed-air refrigeration technique and gas injection technique, without supplying external electric apparatus.

针对现有机车空调系统电源特殊、冷媒多为化学制剂、系统复杂的状况，利用机车制动系统空气压缩机间歇工作的特点，以高压空气为动力源，有机地结合压缩空气制冷技术和气体喷射技术，提出了一套无需外加电气设备、全新风的机车司机室空调系统方案，并介绍了该系统的设计方法和气体喷射器的设计过程，为进一步深入研究奠定了基础。

In this paper, grape seed extract of the physical and chemical properties and physiological functions, the extraction process, the prospects for development are reviewed.

在本文中，葡萄籽提取物的物理和化学特性和生理功能，萃取过程中，发展前景评述。

Results show that the mullite grogs can be gained by the method at 1700℃ as long as the control of the chemical composition of ingredients(content of Al2O3 and ratio of Al2O3/ SiO2 ,etc.) with apparent porosity＜2.5% and bulk density≥2.75g/cm3; the heating process can be divided three stages, which are formation of primary mullite, secondary mullitization stage and liquid phase sintering stage.Key words bauxite, coal gangue, mullite grogs

结果表明，只要控制好混合料的化学组成（Al2O3含量、Al2O3/SiO2比等），就可采用此工艺制备出莫来石料，其烧结温度为1700℃，所得莫来石料的显气孔率大于2.5%、体积密度大于或等于2.75g/cm3；加热过程可分为一次莫来石形成、二次莫来石化和液相烧结3个阶段。

The calculations show that there exist double peaks during the process in the gun chamber pressures.

结果表明，液体工质电热化学发射过程中燃烧压力存在双峰现象，第1个峰值出现在弹丸几乎尚未运动的时刻，与初始Taylor空腔体积以及初始等离子体射流速度有关；第2个峰值是等离子体和工质分解的共同结果。

In a hadronic scenario, strange particles can be produced through inelastic collisions which will drive the system toward chemical equilibrium.

在强子图象中，奇异粒子可以通过非弹性碰撞来产生，这一过程将使系统趋于化学平衡。

During the sintering process, the calcium carbonate reacts with iron ore to from the calcium ferrite as a bonding matrix. The productivity and strength of sinter phase are mainly controlled by the volume and texture of calcium ferrite.

炼钢过程中所用之助熔剂包括了碳酸钙系列与氧化镁系列等矿物，其中以碳酸钙会与铁矿在烧结制程中形成铁酸钙为主的成分，且其化学成分与烧结相的存在会影响烧结矿之产率与强度。

The uncertainty for determination of iron concentration in zinc-iron coating of galvaneal by chemical method was evaluated.

对用化学法测定锌铁合金钢板镀层铁含量测量结果的不确定度进行评定，分析了该方法测定过程的不确定

The effects of port injected n-heptane equivalence ratio and iso-octane direct injection timing are investigated experimentally and numerically. The results indicate that the combustion mode of iso-octane is dependant on the iso-octane direct injection timing corresponding to the stage of n-heptane HCCI combustion. In case of direct injection before the low temperature reaction of n-heptane, premixed combustion of the iso-octane occurs. In case of direct injection at the NTC period or the initial high temperature reaction stage of n-heptane, the iso-octane mainly undergoes premixed combustion.

进一步采用进气道预喷正庚烷，缸内直喷异辛烷，在没有火花点火和热EGR的辅助下利用预喷正庚烷HCCI燃烧产生活化热氛围的热作用和化学作用引燃缸内直喷高辛烷值燃料异辛烷，系统研究了不同预喷正庚烷当量比和缸内直喷时刻对直喷异辛烷燃烧模式、发动机效率和排放的影响，并用三维CFD耦合化学反应动力学对其燃烧过程进行数值模拟。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。