He is the lineal descendant.

他是直系子孙。

He is a lineal descendant of the company's founder.

他是公司创始人的直系后裔。

This method realized wide lineal limit, high sensitivity, precision.

方法有较宽的线性范围，较高的灵敏度和精密度。

This code solves a non lineal system using the simple gaussian method.

此代码解决了非直系系统使用简单的高斯方法。

There was a fluttering lineal echo in the aortic lumen during diastole;

主动脉腔内收缩期可见一条扑动的、向前运动的线性回声；