CAM

计算机辅助制造

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。