boron

1. 1.

   The chemical element (symbol B) with an atomic number of 5, which is a metalloid found in its pure form as a dark amorphous powder.

   化学元素,符号B,原子序数5,是一种类金属,纯态为深色无定形粉末。

2. 2.

   An atom of this element.

   硼元素的一个原子。

硼元素的一个原子。；硼；[化] 硼B

Connections

Learner notes