词汇	impingement black
释义	impingement black 烟道炭黑
随便看	system of ground radar system of group tonalities System of Guardianship system of guards system of guidance system of guidance and service system of 'guideline' prices system of hairspring and balance system of handling a case system of handling indigent migrants system of harmonic analysis system of head of state system of hearing system of hearing-test system of hereditary conscription system of heritage conservation system of heritage tax system of hiding by relatives system of higher education system of higher vocational education system of high forest with standards system of highways system of hinge system of hingenotation of bivalve system of historiographer