American Institute Time Hull Form {= AITH Form}  美国协会船舶保险时间保单

exponent form Newton backward interpolation operator in power exponent form  牛顿后向插指算子

form factor [= wave form factor]  波形因素; 波形因数

metric normal form of quadratic form  二次形式的度量标准形式

the canonical form of a quadratic form  二次型的标准型

Unitary-form (U-form) firm  U型厂商

represeuting a complete form sence f rom one thousaud Chinese feet and a detail form from one hundred Chinese feet  千尺势,百尺形

240 spark plug gas engine  240火花塞式燃气机

5-valve spark ignition engine  五气门汽油机

AC spark  交流火花

AC spark tester  工频火花检验机

Activation-spark  CH4-CO2重整

active spark  有效火花

Advanced Spark  点火提前; 提早火花

Advanced Spark Timing  点火提前角

air-gap spark  气隙火花

alternating spark-over voltage  交变放电电压; 交变闪络电压; 交流闪络电压

Anodic Spark Oxidation  阳极火花氧化

anti-spark  消火花; 国际化网域名称系统