passive iron

基本解释

The presence of nitrate resulted in a positive shift in corrosion potentials, and thus shifted the conditions to favour the formation of a passive oxide film at the iron surface.
在硝酸根離子存在條件下，鉄的腐蝕電位相應陞高，系統條件也因之發生變化，導致鈍性的鉄氧化物在鉄表麪生成。
Inductive iron core is essential to passive power-factor correction circuit(PFC). The selection of inductive material is a key factor which has influence on the performance of PFC.
電感鉄芯是PFC電路中不可缺少的器件，電感材料的選擇是影響PFC電路性能的關鍵因素之一。
The presence of exogenous surface contamination, including dirt, grease, free iron from contact with steel tooling, and so forth, may interfere with the formation of the passive film.
外生的表麪汙染，包括：塵土、油脂、來自鋼鉄加工的遊離鉄等等，可以影響到鈍化膜的生成。
blog.sina.com.cn