parts per trillion
相关英语词汇推荐
- cut-through switching
- spindle bearing
- coherent
- most unfavorable steam supply main
- illuminating aperture angle
- slip curve
- broom
- vibratory converter
- gravitational mass
- D-D reactor (deuterium-deuterium reactor)
- surroundings
- heteropolar inductor generator
- mode,normal
- fuel tank
- rectifier protection
- self-tempering
- natural convective heat transfer
- in-line image
- write up
- direct-axis transient voltage