Preparation of Crude Toxins of Ralstonia solanacearum in Sweet Potatoes and Influence of Heat、Ultraviolet Ray、Enzyme to the Biological Activity of Crude Toxins;
甘薯青枯菌粗毒素的制备及热、紫外线、酶对粗毒素生物活性的影响
LIU Xiang-lian is an artistic ideal,his individuality can be summed up to "cold" and "hot".
柳湘莲是一个个性十分鲜明的艺术典型,其个性特征可用两个字来概括,即"冷"与"热"。
In this paper, working principles and measurement results of constant power and constant temperature-difference semi-conductor thermal flow sensors are introduced Thesensors have proved to have potential value as a result of high sensitivity,simple structureand low cost.
本文介绍了恒功率型和恒温差型半导体热式流速/流量传感器的工作原理及其分别用于液体和气体的测量结果。