请输入您要查询的字词:
单词
tier soil
释义
tier soil
Encyclopedia
农学
娄土
释
tier soil
塿土
自然褐土经过长期耕种熟化,施加大量土粪或富含有机质的农家肥,并由风尘自然沉降而形成的一种人为土壤。在中国第一次全国土壤普查(1959)中命名,在中国土壤分类暂行草案(1978)和第二次全国土壤普查分类(1988)中归入半淋溶土土纲,褐土土类、塿土亚类;在中国土壤系统分类(1991)中,归入人为土纲,旱耕人为土亚纲,塿土土类;在美国土壤系统分类中,相当于新成土;在联合国世界土壤图图例(1988)中,相当于人为土。曾称堆垫褐土。
随便看
design of ultrasonic machining system
design of underground mining
design of water resources projects
design outsourcing
design parameter
design parameters of ground motion
design parameter verification
design pattern
design period of railway
design phase
design policy
design principle
design principle of field experiment
design probability of hydroelectric power station
design process
Design project management
design psychology
design region
design requirements of dikes in ancient China
Design Research Society
design resolution
design review
design rule check
design rule check, DRC
design rule checking
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/6/15 13:00:38