| 释义 |
protractor美 [proʊ'træktər] 英 [prə'træktə(r)] n. lengthener,extender,stretcher,expander,increaser 1. | 量角器；分度规an instrument for measuring and drawing angles, usually made from a half circle of clear plastic with degrees (0˚ to 180˚) marked on it |
n. | 1. an instrument shaped like a semicircle marked with the degrees of a circle, used to measure or mark out angles 2. somebody or something that extends or lengthens something 3. a muscle with the function of extending a body part 4. an object that is shaped like half a circle and is used for measuring and drawing angles 1. an instrument shaped like a semicircle marked with the degrees of a circle, used to measure or mark out angles 2. somebody or something that extends or lengthens something 3. a muscle with the function of extending a body part 4. an object that is shaped like half a circle and is used for measuring and drawing angles |
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