Manual weeding weeding time. About 7 to 10 days after sowing, seedling emergence, seedling emergence and attention should be paid to control weeds, drill can be inter row weeds.
除草及时进行人工除草。播后约7 ~10天出苗，出苗前后应注意防治杂草，条播者可进行行间中耕除草。
Finally, in order to control the well path by dynamics, great attention should be paid to the interaction between bit and drill string.
为了实现依据钻柱动力学的井眼轨迹控制，应特别重视钻柱振动特性与钻头受力状况的相互影响。
The people pay attention on raising the span of the usage of the thread of drill collars and preventing the accident of drill string thread failure.
预防钻柱螺纹失效事故发生和提高螺纹连接使用寿命的技术长期以来倍受关注。
We advocate that everyone pay attention to every evacuation drill and improve the ability of dealing with emergency.
所以在此，我倡议：要重视每一次应急疏散演练，提高抗击各种突发灾害的应变能力。
We advocate that everyone pay attention to every evacuation drill and improve the ability of dealing with emergency.
所以在此，我倡议：要重视每一次应急疏散演练，提高抗击各种突发灾害的应变能力。
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