7月17日，国产14米级超大直径盾构机“先锋号”在长沙下线，将用于国内首条下穿太湖隧道建设。
On July 17, China's 14m-class super-large diameter shield machine "Pioneer" rolled off the line in Changsha, to be used for the first #shield#
Show more
Register and share your invite link to earn from video plays and referrals.
