Robertson screwdriver

名词 n.
中文释义

英文释义

名词 n.
  1. A type of screwdriver having a square tip, designed to drive a Robertson screw. Canada
    — The Robertson-head screw has a square hole in the head, made in three different sizes, and must be driven with a special Robertson screwdriver.

词形变化

Robertson screwdrivers plural

词源

From Canadian inventor P. L. Robertson (1879-1951).
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