英语语法分析

The problems about the midpoints of the chords cut by the taper curve are the most critical and difficult in analytic geometry problems.

直线被圆锥曲线截得弦的中点问题，是解析几何的重点和难点。

Temperature of needle tips, the puncture spots on skin and midpoints of needles were measured with semi-conductor thermistor digital thermometer.

使用数字测温仪测量针尖、皮肤进针点及二者中点的温度。

Similarly, when adjusting the dial to any given factor, we can find a series of midpoints which altogether form a combined, or complex, planetary picture.

同样的，当把指示器对准一个制定的目标，我们能找到一串的中点，所有的中点就能组成一个复合星图。