共 50 条
- [33] ONE-STAGE VERSUS 2-STAGE NITRIFICATION IN ACTIVATED-SLUDGE PROCESS [J]. JOURNAL WATER POLLUTION CONTROL FEDERATION, 1976, 48 (04): : 645 - 651
- [35] ISOLATION FROM MECHANICAL SHOCK WITH ONE-STAGE 2-STAGE MOUNTING SYSTEMS [J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1959, 31 (07): : 967 - 976