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大小写变形:Nist
NIST scientists use lasers that emit about 1 billion pulses per second.
NIST的科学家们用激光器每秒发射约十亿次脉冲.
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NIST kicked off the selection process in September 1997.
NIST在1997年9月开始这个选择过程.
Currently, most customers either send or hand carry artifacts to NIST for calibration.
现在, 多数客户要么邮寄要么随身携带制造品去NIST校准.
= National Institute of Science and Technology,全国科学技术学会; = National Institute of Standard Technology, (美国)国家标准技术研究所???
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