就在这时，黑晶张和白警长从东面走了过来。
At this point, Black Crystal Zhang and white sergeant walked over from the east.
本文论述了晶种法氧化铁黑的特点和合成氧化铁黑晶种的基本原理。
The characteristics of iron oxide black by crystal seed method and basic principle of synthetizing its crystal seed were discussed.
本文论述了晶种法氧化铁黑的特点和合成氧化铁黑晶种的基本原理。
The characteristics of iron oxide black by crystal seed method and basic principle of synthetizing its crystal seed were discussed.
应用推荐