abbr. mortgage insurance companies of america; 美国抵押贷款保险公司
mica 英英释义
noun
any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves
used as dielectrics because of their resistance to electricity
n. any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity