Controlling on grid welding deformation and welding stress are the key problems for assuring grid quality.

控制网架的焊接变形与焊接应力是保证网架质量的关键之一。

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This study was focused on promting quality of rice through different plants spacing and density for controlling different groups quality so as to study the influence of quality of Zhengdao 18.

本试验是以提高稻米品质为宗旨，通过不同的栽插行距和不同的栽插株数，调控不同的群体，研究不同群体质量对郑稻18品质的影响。

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Conclusion the detecting results by spectrophotometry can reflect the objective reality and may be one of the methods for controlling the quality of propolis effectively.

结论分光光度法测定结果能反映客观实际，可作为蜂胶质量控制方法之一。

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Here at FORBES, we have what I think is a pretty effective system for controlling the quality of comments.

FORBES: How Amazon Should Fix Its Reviews Problem