他们报告储藏饲料的上方有棕色气体分成。 经年累月，他们既有急性的也有反复亚急性的暴露在NOx混合物中。
They have reported layering of a brownish gas on top of silage, with both acute and repeated subacute exposures to this mixture of NOxover the years.
一种饲料用茶多酚复合抗氧化剂的制备方法为，先取一部分 载体与化学抗氧化剂、乳化剂、增效剂制成混合物；
The method for preparing said product comprises following steps: mixing part of carrying agent, chemical anti-oxidation agent, emulsifying agent and synergistic agent;
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