It was showed that PPT was a kind of advanced propeller with small thrust, which was suitable to orbit transfer, attitude control, station keeping and formation flying for small and micro satellite.

1、

Optimization of system and mission ( orbit transfer and north-south station keeping) based on genetic algorithm ( GA) about GEO satellite using Arcjet propulsion sysytem has been probed.

采用遗传算法（GA）对Arcjet用于GEO卫星的变轨与南北位置保持（NSSK）进行了任务和系统优化计算分析。

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2、

This paper, is interded to define the connotation and extension of stock keeping unit and outline the application of computers in stock keeping unit.

本文力图在对单品管理的内涵与外延界定的基础上，简述计算机在单品管理上的应用。

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3、

Very good product knowledge as well as process knowledge of proper ordering and stock keeping.

良好的产品知识并能将其运用到订购和保持库存上。

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4、

The stock keeping unit number for this physical element.

这个物理组件的库存单位号。

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5、

Keeping them in your room will only distract you.

这些物品放在卧室中只会分散你的注意力。

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6、

Although Kong Zhuxiao always feels like wandering aimlessly like the shadows following her closely, she still sees keeping the room clean as the most important thing.

漂泊感如影随形，但清洁始终是孔萧竹最为看重的事情。

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7、

Nancy: Well, for example, not coming home too late. Keeping your room clean and helping us with some household chores.

南茜：好的，例如：回家不能太晚，保持房间清洁，帮忙做些家务。

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8、

Smiling at the man, Kennedy thanked him for keeping the room spotless.

肯尼迪向他报以微笑，感谢他把房间打扫得这样干净。

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9、

Keeping the room in order is important in one sense but totally unimportant in another.

使房间保持整洁在某种意义上是重要的，在另一种意义上则完全没有必要。

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10、

Her job is keeping the room clean.

她的工作是使这个房间保持干净。

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11、

You must pay attention to keeping the room clean.

你必须注意保持房间的清洁。

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12、

Don't worry about your son, he's in safe keeping with me.

别为你的儿子担心，他正安全地由我照顾呢。

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13、

Don't worry; your jewels are in safe keeping.

别担心，你的珠宝被妥善保管。

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14、

A man's nails should be kept short and a woman's nails shouldn't be excessively long and should be bare or polished in a neutral color.

男人的指甲应该剪短，而女人的指甲不应该太长，如果要涂指甲油，涂个淡色调吧。

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15、

Only the pity of neighbors and the charity of friends kept the woman and her daughters from starving to death.

只是邻居的怜悯和朋友的接济才使得他的妻子不至于饿死。

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16、

Don't imagine you'll be meeting a duchess, she's just a kept woman? None more kept, my dear fellow.

您别以为是把您介绍给一位公爵夫人，她不过是一个妓女罢了，一个地地道道的妓女。

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17、

Stand there and look at the picture of the glory days...

站在那儿，凝视照片里昔日的辉煌…

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18、

These people might be stuck in their glory days.

这些人可能还沉浸在他们的光辉岁月里。

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19、

This would be a chance to get back to the glory days.

这将是收复江山的好机会。

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20、

It's from my old glory days back at south high.

这是我曾经在南城高中的光辉岁月

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