PRECISION ENGINEERING文库下载_中国高校课件下载中心

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TAKAHASHI 8-inch High Precision (RMS WF errors 1/20 λ) Telescope Final Design Designed optimized achromatic doublet to convert a focal telescope to afocal with

麻省理工学院：《polymer engineering》McCrum Prob. 1. 1

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McCrum Prob. 1. 1 Define precision and atomic weights > Digits:=4:H:=1:C:=12: unprotect(0):0:=16:F:=19:c1:=35.5: Calculate relative molar masses(RMM) (1) polybutene >\RMM\=1000*(C+日*2+C+日+(C*2+H*5)); 尺MM=56000