稜角變化的 的英文怎麼說
中文拼音 [léngjiǎobiànhuàde]
稜角變化的
英文
krumbein-
Cuttings shape and size can significantly change from clean cut to angular, splintery, chunky and usually larger than normal usually due to stress relieving
由於應力消除，鉆屑的形狀和大小都有明顯變化，有時無巖屑，有時巖屑的稜角、片形、厚度都比平時的要大。In the experiment, we use the he - ne laser and the semiconductor laser as the source, record the bessel beam patterns behind the axicon by using a digital camera and a microscope, measure the radius of the bessel beam central spot by film - scanning and measure the effect of both the radius of the aperture and the open angle of the axicon on the maximum non - diffraction distance. the experiments show that a specific propagating range has constant power and the beam has a bessel - like distribution in this range. the results agree with the beam corresponding to a diffraction free beam
同時我們還採用膠片掃描的方法測量了無衍射光束的中心光斑尺寸，測量了不同光闌孔徑和不同稜角情況下的最大無衍射距離和傳播軸附近橫截面內微小光孔中的光強，實驗結果顯示當激光光束經過軸棱錐轉換後有一段距離功率變化很小，且分佈近似貝塞爾分佈，符合無衍射光束的特性;經過聚焦后，呈現三維分佈中空的光束bottlebeam ，實驗結果與理論分析基本吻合。
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