entry:n. 进入;入口;条登记;**手续;地的1. n-uncount if you gain entry to a particular place, you are able to go in. 进入许可例:you can gain entry to the club only through a member.你只有通过一位会员才入该俱乐部。例:entry to the museum ...
1、侧重点不同 human强调人类这一“人群”。例句:its rate of growth was fast—much like that of an ape than that of a human. 它的发育速度很快—62616964757a686964616fe78988e69d8331333431373231—更像猿,而不像人。people作“人”讲时,指“社会属性”的人,不是“自然属性”...
ptc和ntc都是热敏电阻器。按照温度系数不同分为正温度系数热敏电阻器ptc)和负温度系数热敏电阻器(ntc)。正温度系数热敏电阻器(ptc)在温度越高时电阻值越大,负温度系数热敏电阻器(ntc)在温度越高时电阻值越低,它们同属于半导体器件。ptc(positive temperature coefficient)是指在某一温度下电阻急剧增加、具有正温度系数的热敏电阻现象或材料,可专门用作恒定温度...