railway telecommunication infrastructure owner's emergency repair-recovery material stock(владельца телекоммуникационной инфраструктуры железнодорожного транспорта ROGER YOUNG)
pressure margin(The steam turbine and HRSG are designed to withstand a somewhat higher pressure than the expected value, in order to protect against uncertainties in flow coefficients, etc. This allowance for increased pressure is termed pressure margin. Kenny Gray)
railway telecommunication infrastructure owner's emergency operational material stock(владельца телекоммуникационной инфраструктуры железнодорожного транспорта ROGER YOUNG)