viscosity/density ratio kinematic viscosity比例: scale; scaling粘度: viscosity比例粘性阻尼: proportional viscous damping非比例粘性阻尼: non-proportional viscous damping粘度: [物理学] viscosity 恩氏粘度 engler viscosity; 粘度计 caplastometer; viscosimeter; viscometer下载手机词典可随时随地查词查翻译