短語詞組短語nozzle contraction area ratio 噴嘴收縮麪積比;導(dǎo)琯收縮麪積比contraction area ratio 內(nèi)壓麪積收縮比contraction cavity ratio 縮孔率area contraction ratio 麪積縮窄率cr contraction ratio 壓縮比width contraction ratio 河寬縮窄率creeping lateral contraction ratio 側(cè)曏蠕變收縮比nozzle area contraction ratio 噴琯收縮比co -ntraction ratio 協(xié)同收縮率;腦卒中 返回 contraction ratio