alt n. adj. 高音(的) n. = Accelerated Life Testing 加速寿命试验(可靠性术语)
ALTA abbr. American Land Title Association 美国土地资格联合会; American Library Trustee Association 美国图书馆保管员联合会; Army Lawn Tennis Association 部队草地网球联合会; Agricultural Landlords and Tenants Act 农业地主和佃户法案