ultra-trace
英['ʌltrətr'eɪs]
美['ʌltrətr'eɪs]
- 超痕量
相关词汇
UltraEdit
ultra
ultra-fine grain cemented carbides
ultrasensitive amino-acid analyser
ultra- narrow phase- locked loop
ultrahigh frequency cathode ray tube
ultra-low temperature preservation
ultra-high-energy beam separator
ultra-free spherical cobalt powder
ultra-violet light screening agent
ultra-high voltage AC transmission
ultra low concentration heavy metals
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