chapter7.2

chapter7.2 - §7-5 功功功 功功 :

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Unformatted text preview: §7-5 功功功 功功 : 功功功功功功功功功功功功功功 功功 功功功功 功 . 功功功功功功功功 1. 功功功功 { 功功功功 - - - 功功功功功 功功功 - - - 功功功功功 功功 功 功功功功功功 功功功功功功功功功功功功功功功功 , 功功功功 , 功功功功功 功功功功功功功功功功功 A功 功功功功 B功 功功功功 C功 功功功功功 功功功功功功功 功功功功功 功功功功功 功功功功功功 : 功功功功功功功功功功功功功功 . 功功 功功功功功功功功功 2 . 功功功功功 功功 { 功功功功功功功 , 功功功功 ; 功功功功功功功功功功 ; 功功功功功功功功功功功功功功 3 . 功功功功 功功 1 : 100 A功 功功 : 功功功功功功功功功 , 功功功功功 功功功功功功功功功功功功 . 4 . 功功功功功 功功 : 功功 功功功 功功 1: 1 00 120 0 功功功功 , 功功功 功功功功 功功功功功 , 功功功功功功 , 功功 0 . 120 功功 功 . 功功功功功功功功功功 1 . 功功功功功功功 功功功功功功功 (b × h 功功功功功 d )功功功功功功功功功 L 功功功 功功功功功功功功功功功 A b h B L C L 2 . 功功功功功功功功 功功功功— 功功功功—功功功功功 功 功功功— 功功— 功功功功 —— 功功功— 功功— 功功 —— σ p ≤ [σ ] p p ≤ [ p] k = t = h/2 h b k t N d T 4T σp = ≤ [σ ] p dhl 4T p= ≤ [ p] dhl 功功功 ( 1) 功功功功功功 , 功功功 o 功功 180 . ( 2) 功功功功功功功功功功功功功功功功功功 功功 ( 3) 功功功功功功 , 功功功 功功 .120 0 90 − 0 120 0 功功功功功功 功功功 功功功 1 功功功功功功功功功功功功功功 1 功功功功功 d 功功功功功功功功功功功功功 2 功功功功功功 30 D 功功功功功功功功功功功功功 o ...
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This note was uploaded on 10/11/2011 for the course ENG 220 taught by Professor Zhao during the Spring '10 term at BYU.

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chapter7.2 - §7-5 功功功 功功 :

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