Boron is an element with the ability to absorb neutrons, the sub-atomic particles that occur in the nucleus of all atoms.

硼是一种可以吸收中子的元素，中子是一种存在于所有的原子核中的亚原子粒子。

youdao

You must fuse at white heat the several particles of your learning into an element so ductile and so strong that nothing can destroy it without destroying you.

你必须用炽热将你的学识中的若干粒子融化成同钨一样韧性大，强度高的元素。这样只要你存在一天，这样元素就决不会消失。

youdao

The finite element method is used to analyze the relationship between strength and stress of the particle reinforced iron matrix composites and the shapes, sizes and fraction volume of the particles.

采用有限元方法分析了颗粒增强铁基复合材料强度和应力与颗粒形状、尺寸以及体积分数的关系。

youdao