crosstie

Though the analysis of the concrete track crosstie dehiscence, a new maintaining method is provided.

介绍了混凝土轨枕伤损的类型其原因，并推出了一种适合混凝土轨枕线路特点的养护作业方法。

;fine goat wool, charcoal, crosstie, cork products, some primary wood products and so on, the elimination of export tax rebate policy.

毛、炭、枕、软制品、部分材初级制品等，取消出口退税政策。