beta rays

常見例句

Candidates may not retake a beta exam at any time.
在任何時間都可以重考在線的無監(jiān)考的考試。
The corona's rays flash out in a brilliant fan that has wispy spike-like rays near the Sun's north and south poles.
光環(huán)帶的光束像一把流光折扇，在太陽的南北兩極附近形成纖細的輻射線。
The gun can fire invisible rays.
這槍能發(fā)出看不見的射線。
Cathode rays are attracted by a positive charge.
陰極射線被陽電荷所吸引。