Biogas system is the pivot in material recycling and energy transformation of a complex agro-ecosystem.
沼气发酵系统是复合农业生态系统中物质循环和能量转化的枢纽。
The soil animal is a major component of the terrestrial ecosystem, and plays an important role in material recycling, energy conversion, and soil structure forming and improving.
土壤动物是陆地生态系统的重要组成部分，对系统内物质的循环、能量的流动、转化以及土壤结构的形成和改良具有重要作用。
Doesn't Zhuang turn the deserted in the world and the environmental protection awareness deep in his heart into material recycling and spiritual recycling in the contemporary aesthetic creating?
庄红艺不正是把外界的废弃之物和内心的环保意识，转“化”成为当代审美创造中的物质再生与精神再生吗？
Recycling zinc waste: zinc alloy recovery, zinc slag melt, coarse zinc recovery, crushing zinc recovery, down zinc material recycling, etc.
回收锌废料：锌合金回收、锌渣回收、粗锌回收、破碎锌回收、回炉锌料回收等。
The environmental pollution, material recycling aspect and so on use, worker's health and security frequently can attach the new limiting condition to the choice of material.
环境污染、材料的回收利用、工人的健康及安全等方面经常会对材料选择附加新的限制条件。
The environmental pollution, material recycling aspect and so on use, worker's health and security frequently can attach the new limiting condition to the choice of material.
环境污染、材料的回收利用、工人的健康及安全等方面经常会对材料选择附加新的限制条件。
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