The Star-Spangled Banner went to a special conservation laboratory.
星条旗被运送到特殊保存实验室中。
Others become conservation officers, laboratory technicians, food retailers, and environmental scientists.
或者是从事资源保护工作,实验技术人员,食品零售和环境专家。
On the basis of field soil loss observations and laboratory soil features analysis, effects of multifunction filter on soil conservation and improvement were studied.
通过径流观测试验及土壤理化分析,论述了覆盖人工生草膜后,土壤流失的减少效果,以及土壤理化性质、土壤微生物活动的变化情况。
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