difference of level  落差

energy level difference of bonding atomic orbitals  成键原子轨道能级差

four tones of level and oblique  平仄四声

level difference between magnetic-cores of stator and rotator  磁场中心高差

the model of level of detail  细节层次模型

Analysis of difference of velocity  差速分析

estimation of difference of means  平均值差估计

Theory of Difference of Classes  类类互异定理

and difference of two polygons  两个多边形的交、并、差

Information Center of Ministry of Housing and Urban-Rural Development  住房和城乡建设部信息中心

interaction of impeller and volute casing  叶轮与蜗舌的相互作用

3-level of ontology application and practice  多式联运单证

a high level of athletic talent  商用终端机设备

A level of first order  一级A

a multi-level and wide range  多层次和多元化

A、B level of soil  土类A、B层

Abnormal level of blood mineral  血液矿物质水平异常

Abnormal level of unspecified serum enzyme  血清酶水平异常NOS

acceptable level of risk  可承受风险等级