negative die阴模negativeadj.否定的；消极的；负面的；负的n.否定；反面意见；底片；[数]负数vt.否定Negative valve overlap负气门叠开negative contact agent负接触剂negative wave velocity负波速negative chronotropism[医] 阴性变时现象negative sum-up game负和博弈negative corona plasma负电晕等离子体negative definite form负定型negative artesian head负承压水头negative case analysis负性个案分析negative skin friction表面负摩阻