鉛苾筆的英文名稱是甚麽?

英文名稱是:automatic pencil
Japan名稱是 : sharp pencil

鉛芯筆 :

A mechanical pencil, lead pencil or clicky pencil (usually called a propelling pencil in British English; other names include clutch pencil, or Pacer after a Papermate model, a genericized trademark) is a pencil containing an internal mechanism which pushes ("propels") the thin graphite lead through the tip. Like standard pencils, there are also mechanical pencils which have a rubber eraser on the end. Mechanical pencils provide lines of consistent thickness, well suited for technical applications such as drafting and writing.

http://en.wikipedia.org/wiki/Mechanical_pencil