词语crown block
解释顶滑车,拱冠石
词性名词
crown block〔名词〕冠轮,天车详细»
crown block〔名词〕天车,拱顶石详细»
crown block〔名词〕起重定滑轮,天车详细»
crown block〔名词〕拱顶石,天车,拱顶石详细»
crown block〔名词〕天车详细»
crown block起重定滑轮,天车详细»