mechanical aid机械辅助器mechanicaladj.机械的；力学的；呆板的mechanical cardiac prosthesis机械瓣mechanical thermal controller机械控温仪器mechanical deep - loosening作业性能Mechanical properties of soil土的力学性质mechanical ventilating system机械送风系统Mechanical penile stimulation机械性阴茎刺激mechanical-- transmission机械传动mechanical reclaiming process机械法再生mechanical relaxation process力学松弛过程mechanical traumatic cataract机械性外伤性白内障

1. The development of mechanical timepieces witnessed the search for more accurate sundials with which the timepieces could be regulated.
   由于机械计时器的发展，人们开始寻求更精确的日晷，以便校准机械计时器。