Only differences in enthalpy are of practical engineering interest.在实际工程上有意义的只是热含量之差.A change in enthalpy also takes place when a change of phase occurs.相发生变化时,焓也发生变化.The enthalpy is constant in the throttling process.节流...
The corn stover mainly consists of cellulose, hemicellulose and lignin.玉米秸秆主要由纤维素 、 半纤维素和木质素组成.This bacterial decay of cellulose also occurs in the gut of most herbivorous animals.在很多食草动物的肠内这种纤维素也能被细菌分解.The plant uses th...
The snow on the ground gradually cemented as the night fell.随着夜幕降临地上的雪逐渐凝结起来.For the materials with high hardness, such as cemented carbide, glass , jadeware, etc.适用于各种高硬材料的磨削及研磨加工, 如硬质合金 、 玻璃、玛瑙 、 珩磨汽缸套等.The filters sho...