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类型其原因，并推出了一种适混凝土轨枕线路特点作业方法。

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

细山羊毛、木炭、枕木、软木制品、部分木材初级制品等，取消出口退税政策。