老化

The study of fluorescence spectrum proved that the excited phenylenerings of amorphous PES copolymer with high density phenylenerings in its main chain could form an excimer with the surrounding unexcited phenylenerings, and the emission peak intensity of excimer was strengthened with the increase of aging time.

荧光光谱的研究证明，非晶态聚醚砜共聚物由于主链苯环密度较高，苯环受激处于激发态时易与周围激态苯环相互作用形成激基缔合物，缔合物发射峰的强度随老化时间增加而增强。

The study of fluorescence spectrum proved that the excited phenylene-rings of amorphous PES copolymer with high density phenylene-rings in its main chain could form an excimer with the surrounding unexcited phenylene-rings, and the emission peak intensity of excimer was strengthened with the increase of aging time.

荧光光谱的研究证明，非晶态聚醚砜共聚物由于主链苯环密度较高，苯环受激处于激发态时易与周围激态苯环相互作用形成激基缔合物，缔合物发射峰的强度随老化时间增加而增强。

They were old, uninspired and expensive.

他们老化、没有动力而且昂贵。

Observation on the ultrastructure of the radicle cell of cabbage seeds indicated that the ultrastructure changed with the seed vigor reduced, such as the segregation of cytoplasm from the cell wall, the fragmentation of cell membrane, the vesiculation of protoplasm, the homogenization of chromation, the disintegration of cytoplasm, the distinguishing of nuclear membrane and nucleous ,and so on.

胚根细胞亚显微结构电镜观察结果，甘蓝种子通过人工老化活力降低后，胚根超微结构发生了变化，主要表现为：质壁分裂，细胞膜内陷或局部断裂，细胞质空泡化，细胞器难以辨认，染色质均质化，核仁和核膜的界限模糊等现象。

The principal and the vice-principal of the college both attended the meeting.

学院的正副院长均出席了会议。富饶和沉淀是导致湖泊老化过程的主要原因。

Generally speaking, wine farming people complete vinous ageing process with the oak bucket that has 13 years of histories.

一般而言，酒农们都用有13年历史的橡木桶来完成葡萄酒的老化过程。

Sorption is a crucial process for PAHs bioavailability, volatilization and transport in soil.

土壤吸附是控制其挥发、运移和降解的关键因素，老化则是缓慢吸附的过程，对有机污染物的生物有效性有重要的影响。

The company set the development, production and sales, has been committed to the field of power equipment to explore and practice, in the company's vast number of projects, technical staff's efforts, is to form a DBW, SBW series compensated AC voltage stabilizer, aging Test voltage regulator, TDGC2J, TSGC2J Series Contactless manual, electric regulator, SG series dry-type transformers as the dominant products.

公司集开发、生产和销售于一体，多年来一直致力于电源设备领域的探索与实践，在公司广大工程、技术人员的努力下，现以形成以DBW、SBW系列补偿式交流稳压器、老化试验稳压器、TDGC2J、TSGC2J系列接触式手动、电动调压器、SG系列干式变压器等为主导产品。

It is equipped with asphalt return tube, anti-puffing pressure vent valve, anti-aging overhead nitrogen valve, thermometer, volumeter and output asphalt rapid discharge valve and coupling.

配备沥青溢流管、防冒液呼吸阀、防老化顶置充氮阀、温度计、容量计和输出沥青的快速卸料阀及接耦。

It's equipped with anti-liquid overflow breather valve, anti-aging overhead nitrogen charging valve, thermometer, volumeter and asphalt testing valve and reserves feed opening interface flange, high level and high high level alarm flange, blender reserved hole flange and discharge opening flange used to output asphalt.

配备防冒液呼吸阀、防老化顶置充氮阀、温度表、容量计、沥青检测阀，并预留进料口接口法兰、高位及高高位报警接口法兰、搅拌器预留孔法兰和输出沥青的卸料口法兰。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。