A rod moved by a cam to operate the valves in an internal-combustion engine. 阀门挺杆通过凸轮转动的杆,用来操纵内燃机的阀门
The movements of trade cam be graphed out, enabling the firm to plan their future markets and advertising. 贸易情况能用图表表示出来,以便该公司能规划未来的市场和广告。
A projecting cam, as on a rotating shaft, that activates another machine part. 凸轮如转轴上突出的挺杆,使另一个机器零件活动
cam
[ noun ]
a river in east central England that flows past Cambridge to join the Ouse River
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a rotating disk shaped to convert circular into linear motion
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Cam \Cam\ (k[a^]m), n. [Dan. kam comb, ridge; or cf. W., Gael., and Ir., cam bent. See 1st {Comb}.] 1. (Med.) (a) A turning or sliding piece which, by the shape of its periphery or face, or a groove in its surface, imparts variable or intermittent motion to, or receives such motion from, a rod, lever, or block brought into sliding or rolling contact with it. (b) A curved wedge, movable about an axis, used for forcing or clamping two pieces together. (c) A projecting part of a wheel or other moving piece so shaped as to give alternate or variable motion to another piece against which it acts.
Note: Cams are much used in machinery involving complicated, and irregular movements, as in the sewing machine, pin machine, etc.
2. A ridge or mound of earth. [Prow. Eng.] --Wright.
{Cam wheel} (Mach.), a wheel with one or more projections (cams) or depressions upon its periphery or upon its face; one which is set or shaped eccentrically, so that its revolutions impart a varied, reciprocating, or intermittent motion.
Cam \Cam\, a. [See {Kam}.] Crooked. [Obs.]
Which brings us to the real scandal behind the invention of the fiendish screw: it was designed to cam out as it was driven in by automated screwdrivers, so the screw head wouldn't be ruined.