cm centimeter 中文意思是什麼
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In most region of space, the particle density is about 1 atom per cubic centimeter, however, in some region of space, the density is over 1000 atom cm
在浩瀚的宇宙中，大部分地方的粒子密度約為每立方厘米有一顆原子，但宇宙中一些角落，粒子密度卻達1000原子立方厘米空氣的密度約為10 -
The results show that the majority of 7be is retained in the top one centimeter of soils, and the concentration of 7be decreases exponentially with soil depth. for the cultivated study field, the depth distribution of 7be is very similar to the undisturbed site when it is n ' t subjected to erosion or deposition. for the undisturbed, there is abroad peak in the 137cs profile close to the surface and the maximum concentration is found circa 2 cm below the surface
~ （ 137 ） cs在未擾動土壤剖面中主要分佈在0 5cm范圍內，同時在1 3cm的范圍出現一個~ （ 137 ） cs的相對富集層，在3cm以下隨土壤深度的增加呈指數遞減的趨勢； ~ （ 137 ） cs在農耕地土壤剖面中主要分佈在0 20cm范圍內，由於耕作活動的不斷擾動~ （ 137 ） cs的剖面分佈相對均勻。
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