A blue sphere appears indicating a breakpoint is set for this line.
这样就会出现一个蓝色圆点，它表示已为该行设置了断点。
A sphere, in contrast, concentrates its beam to a line - which is why a "line feed" antenna was originally used at Arecibo.
球形的则不同，它会把波束汇聚到一条线上——这就是为什么阿雷西博先前使用的是“线反馈”天线。
The paper discusses the principle of internal sphere diameter measurement on line, composition of the measuring device and the method of the measurement error correcting.
论述了大型内球面直径在线测量的原理、测量系统的组成及误差修正方法。
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