Ma ʻAukake 20, 2020, ua hoʻokō ʻo Guangzhou metro operation headquarters, Guangzhou Metro Design and Research Institute, me Nanjing Junli Technology Co., Ltd., i kahi hoʻomaʻamaʻa hoʻomaʻamaʻa wai kūpono o ka puka wai wai hydrodynamic piha piha i ka puka / puka ʻana o ke kahua o Haizhu Square Station. Ua hoʻopaʻa maikaʻi ka ʻīpuka wai wai hydraulic hydraulic, a ua kūleʻa ka drill a mahalo nui ʻia.
Ka manawa hoʻouna: Sep-08-2020