1.The importance and conception of claim, the classification of noncontrollable factors in engineering construction and the claims caused by those factors are introduced.
介绍了程施中索赔的重要性、概念程施中非可因素的种类其导致的索赔。
2.Is to analyze the power paremeters of variable speed AC drive.Is to accomplish the power paremeters of variable and noncontrollable speed AC drive.