射线

• A ray is a line beginning at a certain point and extending indefinitely .
  射线是一根从某一点开始，无限止地延伸的线。
• Secondary xylem consists of pitted vessels, parenchyma fibers and rays .
  次生木质部由孔纹导管、薄壁组织及射线所组成。
• The other element, which caused the stronger radiation, was given the name radium .
  另一种发射更强射线的元素定名为镭。
• It is almost the case that each x ray source exhibits its own brand of variability .
  几乎每个x射线源都有自己的变化特点。
• When a surface is perpendicular to the rays , their intensity is at their maximum .
  当表面与射线垂直时，射线的强度最大。
• Changes in soybean water status have also been measured by beta ray gauging .
  大豆水分状况的变化也已用射线计量器测出。
• Further, both gamma rays and neutrons can produce harmful effects in living organisms .
  此外，r射线和中子都能损害生物组织。
• An irradiation of 60 sec. limits the build-up of excessive gamma radiation levels .
  采取60秒辐射限定了剩余伽玛射线水平的增高。
• Scientists photograph these images to produce the spectacular x-ray pictures .
  科学家们对这些图像进行摄影，制成壮观的X射线图。
• Most metallic and some nonmetallic elements will emit characteristic radiations .
  大多数金属和某些非金属元素都会发出特有的射线。