forward bias

Based on the newly-built physical models of the transistor,the paper attempts to analyse the bias state within saturation and carriers motional principles of the bipolar transistor,and meanwhile explains advancedly the correctness of the forward bias of the transistor-collector junction on the state.

建立三极管的物理模型 ,分析讨论了三极管饱和时的偏置状态和载流子的运动规律 ,进一步说明了此时三极管集电结正偏的正确

Endothermic effect and volume expansion (or exothermic effect and volume contraction) accompany the forming of nonideal solution with positive deviation(or negative deviation).

用热力学方法对二组分非理想溶液进行分析得出：（１）若组分Ａ具有正偏差，则组分Ｂ也具有正偏差；若组分Ａ具有负偏差，则组分Ｂ也具有负偏差；（２）在形成具有正偏差的非理想溶液时伴随有吸热效应和体积增大；（３）在形成具有负偏差的非理想溶液时伴随有放热效应和体积减小的结

According to the experience of the author in using photoshop software, combining with the operating procedure and operating effect,the paper introduces two ways of color cast:using Neutral gray theory to correct color cast and Original color Reduction to correct color cast.

本文根据作者在photoshop软件中的使用体会,结合图片的操作过程和操作效果,介绍了两种校正偏色的方法:使用"中性灰"理论校正偏色和本色还原校正法。