出典:Wikipedia
出典:『Wikipedia』 (2011/07/19 04:48 UTC 版)
A screwdriver is a tool for driving screws and rotating other machine elements with the mating drive system. The screwdriver is made up of a head or tip, which engages with a screw, a mechanism to apply torque by rotating the tip, and some way to position and support the screwdriver. A typical hand screwdriver comprises an approximately cylindrical handle of a size and shape to be held by a human hand, and an axial shaft fixed to the handle, the tip of which is shaped to fit a particular type of screw. The handle and shaft allow the screwdriver to be positioned and supported and, when rotated, to apply torque. Screwdrivers are made in a variety of shapes, and the tip can be rotated manually or by an electric motor or other motor.
a screw-driver
ねじを締める
a screw
universal screwdriver
ねじを回す
ねじが緩む
ねじの緩み
tighten a screw with a screwdriver
ねじを抜く
a screw-steamer
ねじを締める.
右ねじ.
ねじをしめる
ねじを抜く
the steam engine
先導車.
スパッタリング・エンジン
a screw-driver
木挽(こび)き.
universal screwdriver
a screw
ねじを締める
flippers
a screw-steamer
ねじが緩む
ねじの緩み
a scythe
ねじを抜く
tighten a screw with a screwdriver
弓師.
sweepers
右ねじ.
ムチオトカゲ
whiptails
ハシリトカゲ類
whiptails
a sandwich
a chisel