null-field boundary integral equation  零场积分方程

Null (-null) additive  零（零）可加

null-null additive  零零可加

sigma field (σ-field)  σ体

Residual magnetic field/field  剩磁场

Magnetic field/field  磁场

null brush Null  笔刷

null character Null  字符

null pointer Null  指标

null reference Null  参考

null statement Null  陈述式

null string Null  字符串

null terminator Null  终端子

null-terminated character string Null  终端字符字符串

a system of a major field of specialization plus a minor field  长尾复叶耳蕨; 井底温度; 主副修制

added electric field and magnetic field  外加电磁场

adjustment between wind field and pressure field  风压场调整

analysis of field to field  场对场分析

Chongqing Gas Field in South-West Oil-Gas Field Company  西南油气田分公司重庆气矿