tzdtrue zenith distance 正确的顶点距离； abbr.；=true zenith distance 【海】真天顶距Tn.英文字母T；[化]氚(tritium)T-shaped budding“T”字形芽接tying restrictions搭销,搭销合同Tylorida ventralisn.横带隆背蛛Typing and staging分型分期T'ang Hsun-changtympanitic abscess[医] 气脓肿Tyloridacylindratan.筒隆背蛛T. b.gambiense布氏锥虫冈比亚亚种T-shaped forceps丁字钳tying-in machine机内打捆