“portal crane”的概念、定义、翻译、参考文献-科学参考

单词	portal crane
释义	portal crane [`pȯrd·ǝl `krān] ^{MECHANICAL ENGINEERING} A jib crane carried on a four-legged portal built to run on rails.
随便看	pseudovector coupling pseudovector meson pseudovitrinite pseudovitrinoid pseudovolcano pseudo-wild type psf P shell psi psia psid psi function psig psilate Psilidae psilomelane Psilophytales Psilophytineae Psilopsida Psilorhynchidae psilosis Psilotales Psilotatae Psilotophyta psi particle

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