They need water for their activity, and are active at 85% humidity and higher.
他们的生活需要水，并适宜湿度在85%或之上。
Surface active agent, auxiliary, water softener and whitener.
表面活性剂、助剂、软水剂、增白剂。
On the clearer water they are more active.
在现在比较清净的水面上，它们便活跃得多。
Water based metal clearing agent is a mixture of surface active agent and many additives.
水基金属清洗剂由表面活性剂及多种添加剂组成。
Water based metal clearing agent is a mixture of surface active agent and many additives.
水基金属清洗剂由表面活性剂及多种添加剂组成。
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