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d t D T, D.T.=Doctor of Theology...

d-b

In most cases , it was found that the jb criterion is safer than hg specification , but adverse result was obtained when r / r is close to 0 . 8 and d / t is too small ( less than 40 ) . code in c language was worked out for simplifying the calculation 在大多數情況下,按照jb標準對此種結構進行補強設計時其安全裕度要比hg標準為高;但是當開孔率接近0 . 8且d t很小時(不大于40 ) ,依jb標準補強設計后的安全裕度反而較按hg規范計算結果要小。

Livingstone d j , manallack d t , tekto i v . data modeling with neural networks : adventages and limitations [ j ] . comput aided mol design , 1997 ( 135 ) : 11 閻平凡,張長水.人工神經網絡與模擬進化計算[ m ] .北京:清華大學出版社, 2000

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