The themes for grade 3 will be: Solar System, Healthy Lifestyle, Mixing Air, Life Cycle of a Silk Worm, Community Service, and Cursive Writing.
三年级将学到的主题内容是：太阳系、健康的生活方式、混合气体、蚕的生命周期、社区服务和草写体。
Particle diameter is an important index for atomizing performance. In order to improve atomizing effect, a new internal mixing air-liquid atomizer has been tested.
雾滴粒径是衡量喷嘴雾化性能的一个重要指标，为了提高喷嘴的雾化效果，对一种新型的内混式气液雾化喷嘴进行了测试。
Before mixing with the products of combustion, the air is preheated.
空气在与燃烧生成物混合之前要进行预热。
The wide flammability range, 4% to 74% in air, and the small amount of energy required for ignition necessitate special handling to prevent the inadvertent mixing of hydrogen with air.
在空气中氢的易燃范围很宽，从4%到74%，而且点燃所需的能量很少，必须特别处理，以防止无意中把氢和空气混合在一起。
During the mixing process, air is also introduced into the mix.
在混合的过程中，也要加入空气。
Situation: mixing the better, electroplating mixing efficiency is high, the air, the water, the cathode have chemistry mixing way.
搅拌状况：搅拌效果越好，电镀效率越高，有空气，水流，阴极摆动等搅拌方式。
Discusses correlations between ventilation effectiveness and air distribution, analyses why the ventilation efficiency of mixing ventilation is lower than that of displacement ventilation.
讨论了通风有效性与空气分布特性的相关性，分析了混合通风（上送下回）通风效率低于置换通风效率的原因。
Mix large batches of high viscosity fluids in a sanitary environment. ? Full batch (top to bottom) mixing with no air entrainment. ? Increased heat transfer efficiency.
在卫生的环境混合大批高粘度流体。 ?全批次（从上到下）混合，不夹杂空气。 ?提高传热效率。
Feasibility of using oxygen analyzer or gravitometer for calorific value control of LPGair mixture is studied in the system of mixing LPG and air.
探讨了在液化石油气混空气系统中采用氧分析仪或相对密度仪控制混合气热值的可行性。
The pollutant samples in air of mixing, casting and vulcanizing sections of small-scale HTPB propellant processing line were taken by use of activated carbon.
以活性碳为吸附剂，对HTPB推进剂小型装药线混合、浇注、硫化岗位空气中的污染物进行了富集采样。
The effect of temperature, air flow rate, stirring speed, initial mixing condition on the reaction rate and the speed form have been studied systematically.
探讨了反应温度、空气流量、搅拌速度、碱比、初始混合状态等因素对晶种制备过程中氧化速率及晶种形态的影响。
The emission ingredients can reflect the working condition of fuel supplying system and air supplying system, the mixing and burning condition in cylinder.
车辆的尾气成分在一定程度上反映了发动机燃油供给系统、空气供给系统的工作状况，气缸内混合气的混合和燃烧状况。
In petrochemical production, such methods as air compressing, pump circulation, mechanical blending and pipeline mixing are usually used in product mixing.
石油化工生产中常用的油品调合方法有压缩空气、泵循环、机械搅拌和管道调合。
Through homogeneous mixing between gas and air in cyclical combustion chamber of gas external combustion type lime kiln, it can be enough combustion, has homogeneous flame temperature.
煤气、空气在外燃式石灰炉的环形燃烧室内混合均匀，燃烧充分，火焰温度均匀，便于控制。
In addition to temperature control, mixing, it also has the necessary return of organic synthesis and air displacement function, in addition, aluminum can be changed by changing the synthesis process.
除了温度调节、搅拌以外，还具备有机合成必要的回流和空气置换机能，另外，通过变换铝片可以改变合成的进程。
The function of air motion, which promotes fuel mixing with air, is great mainly after fuel spray impingement.
空气涡流对燃油与空气混合的促进作用主要发生在油束与燃烧室壁面碰撞以后。
The static mixer or motionless mixer, unlike hand mixing, does not add air to the mixing process, which results in an optimal mixture.
静态混合管，不需要手动搅拌，在混合过程也不需要加压，就能达到最理想的混合效果。
Aiming at rotating cone feeders used in annular spouted beds, the influence of spouting air velocity and the amount of hold-ups on particle mixing has been investigated.
针对环形喷动床采用旋转锥播料器对环形空间给料的方法，研究喷动风速和床上物料量对颗粒混合规律的影响。
At low temperatures, mixture formation is poor due to the large fuel droplets concerned, and due to the inefficient mixing of the fuel with the air drawn in by the engine.
低温时，燃油黏度和密度增大，且发动机所吸入的空气无法与燃油充分混合，从而影响油气混和气的形成。
These measures include improvement of oxidation ceramics and heat insulator, mixing high concentration methane and controlling air input.
具体措施包括：氧化陶瓷的改进、保温材料的改进、掺混高浓度瓦斯、控制进气量。
The authors suggest that the turbulence generated by the turbine rotors, which can enhance the vertical mixing of warm and cold air, leads to the observed effect.
作者认为，通过涡轮转子所产生的动荡，这可以提高冷暖空气的垂直混合，导致所观察到的效果。
This paper introduced an automatic air mixing equipment for gas protection welding at work site, which can control the accurate proportion of airs.
介绍了一种用于焊接现场的气体保护焊的自动混气设备，该设备能精确控制气体混合比例。
Mechanical agitation, can be equipped with special air sparger, make mechanical agitation combined with gas litres of mixing, reduce power consumption.
机械搅拌，可配置特殊空气分布器，将机械搅拌和气升搅拌结合，降低功耗。
Photobioreactors suitable for macroalga cell cultivation must offer five fundamental factors:illumination, controllable temperature, air transfer, nutrients transfer, and mixing.
适合大型藻类细胞增殖的光生物反应器需要五个基本因素：光照、温度控制、气体传输、营养物质传输、混合。
This equipment was composed of air pumping, mixing, sign detecting and electrical controlling components.
设备主要由气体传输、气体混合、信号检测和电气控制几大部分组成。
One of these new technologies is the Albonair air-assisted SCR system with external mixing.
欧博耐尔公司的气体辅助式的SCR系统(外部混合)是其中之一。
The conical spray can improve the mixing of fuel and air, and hence lead to good performance and emissions.
伞状喷雾使油气混合改善，在中低工况下可以得到良好的性能和排放指标，但其贯穿距短，在高工况下性能和排放变差。
The conical spray can improve the mixing of fuel and air, and hence lead to good performance and emissions.
伞状喷雾使油气混合改善，在中低工况下可以得到良好的性能和排放指标，但其贯穿距短，在高工况下性能和排放变差。
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