查询词典 keep at

The paper points out that there is a periodic law for global petrochemical market in recent 20 years or more, global petrochemical market has now entered into a rising stage of new prosperity cycle , the prices and margins of petrochemical products and plant operating rates are expected to keep at a high level for 1 ~ 2 years.

指出全球石化市场近20多年来存在着周期性变化规律，目前全球石化市场已进入新一轮景气周期的上升阶段，预计石化产品的价格、毛利和装置开工率将在一段时间(1—2年)维持在较高水平。

The paper points out that there is a periodic law for global petrochemical market in recent 20 years or more, global petrochemical market has now entered into a rising stage of new prosperity cycle, the prices and margins of petrochemical products and plant operating rate s are expected to keep at a high level for 1 ~ 2 years.

指出全球石化市场近20多年来存在着周期性变化规律，目前全球石化市场已进入新一轮景气周期的上升阶段，预计石化产品的价格、毛利和装置开工率将在一段时间(1—2年)维持在较高水平。

Keep at To persevere in work or an action.

坚持做…：继续某项工作或行为

Those reflex answers will come to you with enough practice so keep at it!

这些反射性的回答来就你足够的实践，使保持在它！

It'll keep at room temperature for up to seven years.

它可以在室温下保存7年

As you keep at building your self confidence, you will begin to build more and more trust in yourself.

当你坚持建立你的信心时，你将会对自己产生越来越多的信任。

Keep at it, however, because they will lead your life to perfection.

然而你要坚持下去，因为它们会使你的人生完美。

I am like a woodpecker. When I want to accomplish something, I just keep at it.

我就像只啄木鸟，当我想要完成某事时，坚持下去就是了。

The concentration of oxygen was measured 3 times aday to keep at about 80%.

结果 1。氧浓度的检测氧浓度为 80.17 dl.885呢 2。

The result indicated that the reacting mixture containing dioxane 11.3mL/g HDCA which had been added ethyl chloroformate drop wise should be keep at 10℃ for 30min, then, rising to 15℃ for another 20min in the step of forming mixed anhydride ,and 1.5mol/L NaOH was used to dissolve taurine before aminolysis, and crude product was recrystalled by acetone in purifying process.

结果表明，形成混酐时，二氧六环用量为11.3ml/g HDCA，滴加氯甲酸乙酯后先在10℃反应30min，再在15℃下反应20min；用1.5mol/L的NaOH水溶液溶解牛磺酸后再进行氨解；粗产品用丙酮重结晶。

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。