单词	sanjian
释义	sanjian 三间
随便看	coupling for yielding connection of couplings coupling freqency coupling frequency coupling friction coupling function coupling gel coupling grafting Coupling Ground Wire coupling group coupling groups coupling guard coupling guide coupling h2 production coupling half coupling harmonic oscillator coupling harmonic oscillators coupling head coupling head, adjustable coupling heat coupling heat-moisture transfer Coupling heat transfer coupling heterozygote couplinghitch coupling hitch coupling hole