Neutron Activation Analysis(NAA) is a valid nuclear analytical technique, whichoccupy an important position in the chemical element analysis.
中子活化分析是一种有效的核分析技术，在微量和痕量元素分析中占有重要地位。
2
A lustrous gray strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon.
一种有光泽、灰白色、坚固的金属元素，类似钛，在核反应堆中用作中子吸收剂，见于斜锆石中。
3
The phase-space finite element method is applied to the multigroup neutron transport equation in cylindrical critical systems.