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If redroot pigweeds are the only weeds the minimum dosage of herbicide can be used based on the recommendation.

在不同高度的麦茬环境中，苗后防除双子叶杂草，应使用大雾滴喷头。

At the same time,the influences of various factors,such as the dosage of reducing agent,the.

对制备氯化亚铜过程中还原剂用量、沉淀剂用量、反应时间、反应温度、pH对氯化亚铜收率的影响进行了研究。

When temperature and pH value are held fixed, there is no cross effect between reductant dosage and time.

当温度和pH值一定时，还原剂浓度和时间不存在交互效应。

ResultsThe optimal extraction conditions of polysaccharide was 150 minutes, 90℃ and 1∶50 of the ratio of dosage liquor,5 pots in the pot groups dynamic refluence.

方法通过单罐单因素实验，正交设计分析提取时间、提取温度和料液比对蛹虫草多糖提取的影响；设计罐组式动态逆流提取装置，重点探讨料液比和提取级数对多糖提取得率的影响。

The treatment with rehydration therapy and low dosage insulin is effective and significantly superior to conventional therapy.

水化疗法配合小剂量胰岛素疗法，其疗效优于传统的治疗方法，值得临床推广应用。

Anionic gelatin dosage has an optimal range when it is used as paper reinforcer.

用改性明胶作为纸张增强剂，其用量有一个最佳的范围。

The effects of ice temperature(-1℃)storage and normal low temperature(3℃)storage and different dosage of SO_2 Releaser on fruit quality were investigated in this paper.

研究了4个龙眼品种果实的结冰点及其影响因素，比较了-1℃冰温和3℃低温贮藏对石硖龙眼贮藏效果的差异，探讨了冰温贮藏龙眼时SO2缓释剂的最适用量。

The turbidity change characteristics of sodium resinate solution was studied at the existence of calcium ions. The effect of ACS, a kind of heavy metal ion complexing reagent at different temperature, pH, dosage of ACS, and adding order on the solution turbidity was investigated in this paper.

研究了树脂酸钠在Ca(上标 2+)存在下的溶液浊度变化特点，分析了不同反应温度、溶液的pH、ACS用量及添加顺序等工艺条件对多价金属离子络合剂ACS控制树脂酸钠的影响。

The suitable synthesis conditions were defined as follows: the molar ratio of DCPP and resorcin was 2.1:1;the dosage of catalyst made by myself was 1.5% of the amount of the resorcinol;the first reaction temperature was 120～130℃,the reaction time was about 60min,the second reaction temperature was160～170℃,the reaction time was 60min,the third reaction temperature reaches to 210～220℃ for removing the unreacted phenol and superfluous DCPP.

确定了反应的最佳工艺条件：DCPP和间苯二酚的物质的量之比为2.1：1；使用自制的催化剂，用量为间苯二酚质量的1.5％；起始反应温度为120～130℃，反应时间约为1h；第二步反应温度为160～170℃，反应时间约为1h，最后把温度升到210～220℃除去残留在产品中的苯酚和过量的DCPP，产品收率约为92.0％。

Preliminary bioassay indicates that some compounds display herbicidal activity and excellent fungicidal activity to some extent, and among them the compounds 5k and 8f exhibit higher than 90% inhibition effect against Rhizoctonia solani in dosage of 50 mg/L.

初步的生物活性测试结果表明，所合成的化合物均表现出不同程度的除草及杀菌活性，其中化合物5k和8f的活性最好，在50mg/L浓度下对水稻纹枯病菌的抑制率达90%以上。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。