demarcation

n [U, C] (marking of a) limit or boundary, esp between types of work considered by trade unions to belong to workers in different trades 划界线; 界线; （尤指工会认为属於不同行业间的）工种界线: a line of demarcation 分界线 * [attrib 作定语] demarcation disputes in industry 工业上工种界线的纠纷.

delta wing aircraft, delude, deluge, delusion, delusive, delusively, delve, Dem, dem(o)-, demagnetization, -isation, demagnetize, demagnetise, demagogic, demagogue, demagogy, demand, demand bill, demand loan, demand for, demand to do, demanding, demarcate, demarche, demean, demeaning, demeanour (US demeanor), demented, dementedly, dementia, dementia praecox, demerara, demerit, demesne, demi-, demi-monde, demigod, demijohn, demilitarization, -isation, demilitarize, demilitarise, demise, demist, demister (US defroster),