1) equivalent hole method
当量孔口法
2) Equivalent hole
当量大孔
3) equivalent pore diameter
当量孔径
1.
The soil equivalent pore diameter of aeration porosity of the 10～20 cm soil layer increased under straw mulching and no-tillage and the inactive porosity reduced compared with ck.
结果表明:秸秆还田少免耕土壤水吸力与土壤含水量之间具有明显的幂函数关系,可用幂函数方程θ=a Sb进行拟合;秸秆还田免耕增加了10~20 cm土层通气空隙的当量孔径,降低了无效空隙的当量孔径,改善了心土层土壤结构;秸秆还田提高稻田耕层土壤持水性能,增加土壤水分库容量;秸秆还田后通过增加土壤有机质提高了土壤毛管空隙含量,提高土壤有效水含量;秸秆还田提高土壤耐旱性能和供水能力,不同耕作方式的耐旱性秸秆还田免耕优于秸秆还田间耕。
4) equivalent population
当量人口
5) population equivalent
人口当量
6) equivalent welded joint
当量焊口
1.
This paper introduces some concepts and calculation methods,such as primary qualification rate of welding,equivalent welded joint and qualification rate of equivalent welding.
介绍了焊接一次合格率、当量焊口、当量焊接合格率等概念及其计算方法。
补充资料：孔口
1.洞口。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条