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- Abstract: This paper briefly presented development history of upconversion materials and four mechanisms leading to upconversion Luminescence. 文摘:本文简单介绍了上转换材料的大致发展历史和形成上转换发光的4种机理。
- In this paper, we designed a new scheme: IBE system based on trust service, through add four mechanisms to the existing system to complete the system. 通过在现有的IBE系统上增加4个管理机制完善系统。
- This paper briefly presented development history of upconversion materials and four mechanisms leading to upconversion Luminescence. 本文简单介绍了上转换材料的大致发展历史和形成上转换发光的4种机理。
- In the following section, we review four mechanisms of locked plate failures: (1) plate bending; (2) plate fracture; (3)plate pull-off; and (4) locking screw failure. 在一下部分，我们将回顾锁定钢板失败的四种机制：（1）钢板弯曲（2）钢板断裂（3）钢板脱出（4）锁定螺钉固定失败。
- Target formulation should follow "four principles", target implementation should stick to "four mechanisms", and target checkup should grasp "four strictness". 目标的制定应遵循“四个原则”，目标的实施应坚持“四个机制”，目标实施情况的考核应把握“四个严格”。
- For instance,if we employ two,three or four mechanized divisions against one mechanized enemy division,we can be all the more certain of destroying it. 例如我用两个或三个或四个机械化的师对敌一个机械化的师，更能确定地消灭这个师。
- Effect of four mechanical ventilation modes on oxygen supply and consumption in early stage after severe smoke inhalation injury in dogs. 四种通气模式对烟雾吸入伤犬早期氧供求平衡影响的比较。
- Effect of four mechanical ventilation modes on pulmonary surfactant in early stage after severe smoke inhalation injury in dogs. 机械通气对严重烟雾吸入伤犬早期肺表面活性物质的影响。
- Effect of four mechanical ventilation modes on pulmonary ventilation in early stage after severe smoke inhalation injury in dogs. 四种通气模式对严重烟雾吸入伤犬早期肺通气功能的影响。
- For instance, if we employ two, three or four mechanized divisions against one mechanized enemy division, we can be all the more certain of destroying it. 例如我用两个或三个或四个机械化的师对敌一个机械化的师，更能确定地消灭这个师。
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- My house is four miles distance from the sea. 我家离海四英里。
