共 50 条
- [23] SIMPLE LOW-COST CRYOGENIC CONTROLLER [J]. NUCLEAR INSTRUMENTS & METHODS, 1977, 140 (02): : 391 - 394
- [24] A simple and low-cost air sampler [J]. JOURNAL OF CHEMICAL EDUCATION, 1996, 73 (08) : 787 - 788
- [26] SIMPLE LOW-COST STIMULATOR FOR ELECTROACUPUNCTURE [J]. AMERICAN JOURNAL OF CHINESE MEDICINE, 1979, 7 (04): : 379 - 381