以耕层土壤质地类别作为制图单位，分为轻粘土、重壤土、中壤土、轻壤土和砂质土五种类型。
The soil were divided into five groups of soil, e, g, light clay, heavy loam, medium loam, light loam and sandy soil, using the group of soil texture of plowed layer as the mapping unit.
在工程制图中最常用的国际单位制线性单位是毫米。
The commonly used U. S. customary linear unit used on engineering drawings is the decimal inch.
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