As long as all was still the pen drew a straight line but while the drum was being shaken the line that the pen was drawing wriggled from side to side.
一切都保持静止时笔将画出一条直线，而当圆筒被振动时，笔画出的线就会蜿蜒起伏。
Drawing a straight line on a piece of stone and make the surface curved naturally on one side, the curved surface sprawl across the other three edges.
在一块石板上刻画一条直线，在线的一侧做成起伏不定的自然曲面，曲面向另外三边自由蔓延。
Process electric shop drawing design of storage ring, straight-line portion and intensifier finished by our institute.
我院完成本工程储存环、直线段和增强器的工艺电气施工图设计。
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