PEC化学工程英语证书考试-化学物质及特性词汇固体solid液体liquid气体gas化合物compound混合物mixture粉powder片状粉未flake小粒granule结晶crystal乳化物emulsion氧化物oxidizingagent还原剂reducingagent有机物organicmaterial真空vacuum母液masterliquor富液richliquor贫液leanliquor萃出物extract萃余物raffinate絮凝剂flocculants冷冻盐水brine酸度acidity浓度concentration碱度alkalinity溶解度solubility凝固点solidificalionpoint沸点boilingpoint熔点meltingpoint蒸发率evaporationrate粘度viscosity吸水的waterabsorbent(a)无水的anhydrous(a)外观appearance无色的colorless(a)透明的transparent(a)半透明的translucent密度density比重specificgravity催化剂catalyst燃烧combustion引燃ignition自然点self-ignitiontemperature可燃气体combustiblegas可燃液体inflammableliquid易燃液体volatileliquid爆炸混合物explosivemixture爆炸性环境explosiveatmosphere(environment)爆炸极限explosiveconcentrationlimit废水wastewater废液wasteliquid废气off-gas噪声noisepollution成分composition挠度deflection力和力矩forceandmoment弯矩bendingmoment应力-应变曲线stress-straindiagram百分比percentage环境温度ambienttemperature工作温度operating设计温度designtemperature(pressure)相对湿度RH=relativehumidity油渣、淤泥sludge杂质impurity