“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	y parameter Yponomeutidae Ypsilothuriidae Y punch yr yrast state Y search Y signal ytterbia ytterbium ytterbium oxide yttria yttrium yttrium acetate yttrium-aluminum-garnet laser yttrium chloride yttrium iron garnet yttrium-iron-garnet device yttrium oxide yttrium sulfate yttrocrasite yttrotantalite Yucatán Current yugawaralite Yukawa force

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