при работе | |
math. | when operated at; if operating at; on duty |
prod. | while working; while running; when working; when ... is/are operated; when ... is/are running |
Ду | |
techn. | nominal diameter; DN |
В-режим | |
médic. | two-dimensional echocardiography |
ТРД | |
techn. | turbojet engine |