由于在过去数年内大范围惯常使用此药，为确保正在进行的蠕虫控制工作取得成功，必需监测耐药发生情况。
With such broad and regular use of the drug over the years monitoring drug resistance is essential to ensure ongoing worm control success.
目前，遥感监测能有效解决水环境监测的大范围性、 连续性、动态性以及高效性等技术问题。
Now, the remote sensing monitoring method can solve some technical problem of water environment, such as large range, consecution, dynamic and efficiency.
利用卫星遥感技术进行大范围的区域干旱监测对有关部门的宏观决策和指导农业生产具有重要意义。
The use of remote sensing technology to monitoring wide range of regional drought is of great significance on relevant departments of the decision-making and guidance of agricultural production.
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