A new pet census showed that cats now outnumber dogs by a whisker (7 million to 6.9 million).新的宠物普查显示出猫的数量略微超过了狗的数量（700万比690万）。They came within a whisker of being killed.他们险些丟了性命。Unemployment is now a whisker away from t...
Investigates the matching calculation of electromechanical transmission system for electric cars.研究电动轿车机电传动系统匹配计算方法.Microsystem or micro electromechanical system ( MEMS ) is briefly introduced.本文简要介绍微系统的涵义、发展和主要特点.Electr...