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二级反应 èrjí fǎnyìng
agric. secondary order reaction
met. second order reaction
tech. second-order reaction
water.res., ecol. secondary reaction
二级反应【核】 èrjí fǎnyìng
el. second order reaction
二级反应: 6 phrases in 4 subjects
Chemistry1
Polymers1
Technology2
Water resources2