简要分析了生物、化学、物理化学三类除氨方法的优缺点；
The advantages and disadvantages of ammonia removal by biological, chemical and physical chemical methods are analyzed.
本文对哈三电厂的粉煤灰进行了物理化学性能研究分析，在此基础上，对哈三电厂的粉煤灰进行了品质评定；
The physical and chemical properties of the coal ash of Harbin Third Power Plant (HTPP) were conducted. Based on that, the quality of HTPP's coal ash was evaluated.
脉冲电压波形主要影响废水处理的三个物理化学过程，即：电容效应、液相传质、吸附和脱吸附。
The effects of pulse voltage waveform on physical and chemical water treatment processes include double layer capacitor effect, mass transport, absorption and deabsorption on the surface of electrode.
依矿床形成深度和物理化学条件等差异，将其划分为深部带型、中部带型和浅部带型三亚类。
According to the ore-forming depth and condition of physical-chemical, these deposits may be classified into three class: deep-zone type, mesozone type and epizone type.
针对等离子点火器内三维湍流燃烧流场，采取有限速率化学反应模型，模拟其物理化学过程。
This paper used a finite-rate method to simulate the three-dimensional combustion process in a plasma generator.
固体火箭发动机的点火是一个十分复杂的物理化学过程，包括三个阶段：点火延迟、火焰传播和燃烧室气体充填。
The ignition of the solid rocket motor (SRM) is a very complex physical and chemistry process, which is composed of three component phases: ignition delay, flame spreading and chamber filling.
以加拿大一厂址区碳酸盐岩含水层中地下水受到三氯乙烯（TCE）化合物的污染作为实例，对TCE的物理化学特性及其生物降解作用进行论述。
The physicochemical behavior of trichloroethene (TCE) and its biodegradation in a carbonate aquifer are studied, taking a case history as an example.
以加拿大一厂址区碳酸盐岩含水层中地下水受到三氯乙烯（TCE）化合物的污染作为实例，对TCE的物理化学特性及其生物降解作用进行论述。
The physicochemical behavior of trichloroethene (TCE) and its biodegradation in a carbonate aquifer are studied, taking a case history as an example.
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