The utility model relates to a double-rail conduction type muscle exercising apparatus which is used by various sportsmen to training physical quality and muscular strength in body building exercises.
本实用新型涉及一种用于各类运动员身体素质训练和健美运动肌肉力量训练的双轨传导式肌肉训练器。
2
Railways have benefited from such technological improvements as double-stacked rail cars and better software for managing both rolling stock and supply chains.
铁路（公司）也因技术改进而受益，例如双垛轨道车，而且有更好的软件管理全部机车和供应链。
3
The main reason for the high-speed rail low attendance is that fares are too high; the high-speed railway ticket prices are usually double or higher than normal train fares.