共 50 条
- [33] SPEECH AMPLIFIER SHUTS DOWN AUTOMATICALLY [J]. ELECTRONIC ENGINEERING, 1978, 50 (604): : 33 - 33
- [34] POLLUTION SHUTS DOWN PHOSPHORUS PLANT [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1969, 3 (09) : 811 - &
- [35] International Isotopes shuts down accelerator [J]. CHEMICAL & ENGINEERING NEWS, 2000, 78 (47) : 16 - 16