1) protection factor
防护因子，防护因数
2) protection coefficients
防护因数
1.
The-depth-of-penetration(DOP) experiment of explosively-formed projectile(EFP) penetrating Al_(2)O_(3) armor ceramic was performed,and the mass protection and difference protection coefficients and the variety of them along with the ceramic thickness were gained.
用爆炸成型弹丸(explosively formed projectile,EFP)对Al2O3装甲陶瓷材料进行了侵彻(depth ofpenetration,DOP)实验,得到了99Al2O3装甲陶瓷对模拟EFP的质量防护因数和差分防护因数及他们随陶瓷块厚度的变化规律,初步评估了99Al2O3装甲陶瓷对EFP的抗侵彻性能,解释了装甲陶瓷对EFP的抗侵彻过程和机理。
3) protection factor of UVA(PFA)
UVA防护因子
4) productivity factors of the protective forest
防护林生产力因子
5) cause defense matrix
要因防护矩阵
6) causes and protective methods
致伤原因与防护
补充资料：变换器式功率因数表(见变换器式电表)
变换器式功率因数表(见变换器式电表)
transducer type power factor meter
b lanhuonq一sh一gongl口y一nshub(ao变换器式功率因数表(transdueer type powerfaetor meter)见变换器式电表。
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