plugged crib, shaft curb
plugged crib, shaft curb
[煤炭科技英汉词典]
plugged crib, shaft curb基础井框
支承或悬吊井框的基座框。
是什么意思，plugged crib, shaft curb的解释，plugged crib, shaft curb的翻译
plugged crib, shaft curb
[煤炭科技英汉词典]
plugged crib, shaft curb是什么意思，plugged crib, shaft curb的解释，plugged crib, shaft curb的翻译