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①NBS:为National Bureau of Standards的缩略,即美国的国家标准局。②simulate:模拟,模型试验。③full-size:足尺的,实物大小的。④full-scale:与③同义。⑤would:此处虽为will的过去形式,但不表示过去时,而是表示习惯性,意思是:总是,总会。⑥seismic:地震(所引起)的。⑦was the first……machine:first此处是名词,作表语。conducted,过去分词,修饰first。computer-monitored machine:计算机监控的机械,作介词with的宾语;介
① NBS: abbreviated National Bureau of Standards, the United States National Bureau of Standards. ② simulate: simulation, model test. ③full-size: Full-size, physical size. ④full-scale: and ③ synonymous. ⑤ Would: here is the past form of will, but does not mean the past, but said habitual, meaning is: always, always. ⑥ seismic: earthquake (caused by). ⑦was the first ...... machine: first here is a noun, as an expression. conducted past participle computer-monitored machine: computer monitoring machinery, as a preposition with the object;