The effect of tech-nologies of electroplating under ultrasonic field, heat evaporation plating in vacuum and chemical plated ternary-alloy on properties of diamond is more remarkable.
其中以超声波电镀,真空热蒸镀及化学镀三元合金效果最佳。
The effect of applying chlorine-containing chemical fertilizers on paddy field ecosystems is becoming a matter of concern in China with the extensive application of fertilizers such as KCl and NH_4Cl.
随着含氯化肥(氯化钾和氯化铵)在中国的广泛施用,其对稻田生态系统的长期影响成为人们关心的问题。
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