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生物活性剂 shēngwù huóxìngjì
ecol. bioactivator
oil biologically active agent
water.res., ecol. biologically active substance
生物活性〔催化〕剂
gen. bioactivator
生物 活 性剂
: 10 phrases in 5 subjects
Ecology2
Hydroelectric power stations1
Oil / petroleum2
Technology3
Water resources2