吸的

Using transfer matrix method to analyze microperforated panel absorber s acoustic characteristic;2. The possibility and the significance of replacing fibred absorption materials by fibreless materials,especially by microperforated panels,are discussed.

简要地介绍了吸声材料的基本特点，阐述了无纤维性吸声材料（特别是微穿孔板吸声结构）取代传统的纤维性吸声材料的可能性及其重要意义，较详细地介绍了近年来德国以及我国科研人员在无纤维吸声材料研究上所取得的进展。

The influence on absorption coefficient brought from shape choice with cylindrical or cone-shaped cavity, square or hexagonal profile, from different closure as air or water, from different material properties and structure sizes, are analyzed based on the numerical calculations. Some general characteristics are summarized. It shows that lowest resonance frequency of sound absorbent coefficient is inversely proportional to volume of cavity and sound absorbent coefficient is proportional to perforated percentage.

2通过数值方法研究了吸声结构内腔为圆柱腔和圆锥腔、基材的剖面形状为正四边形和正六边形、不同背衬、基材材料特性、尺寸大小对整体吸声效果的影响，总结了这些情况下非旋转对称吸声结构的声学特性变化规律，得出腔体体积越大，吸声系数最低共振频率越低；穿孔率越大，吸声系数越大的结论。

The parentssolution: work shops showing kids how to give successful drug-and- alcohol-free parties.Says Margery Ranch, PWC director,"Were seen a change in attitude. Young people are feeling more comfortable while saying no."

但在那些吸大麻烟至少一千次的人中，即在那些一天的吸食量相当于过去许多年吸食量的人中，百分之七十三的人继续吸可卡因，三分之一的人转为吸海洛因。

This paper presents a review of studies of interference absorbing materials,which come in three basic types:normal interference absorber,Jauman absorber and FSS absorber. And we particularize the structures,applications and methods of analysis and design of each of these types. Results show that the FSS absorber provides a better absorption ability and is more practicable,and that active multi-layer FSS absorber represents a new direction of interference absorbing material research.

综合介绍了干涉型多层吸波材料的吸波原理及其国内外研究现状，并分别研究了干涉型多层吸波材料三种基本类型：一般干涉型吸波材料、Jauman吸收体和频率选择表面吸收体的一般结构、应用以及分析与设计方法，得出FSS吸收体较之其他类型具有更优的吸收性能和更高的实用价值，最后指出了干涉型吸波材料发展的新方向是有源FSS吸收体。

By comparison of eight micro adsorption, A resin with high adsorption rate and eluent rate was used to adsorb chlorogenic acid from extraction solution. The adsorption parameters are: the content of chlorogenic acid is 0.204 mg per mL adsorption solution, the acidity of adsorption solution is 4, the adsorption velocity of flow is 3 mL per min, the eluent is 30% ethanol, the eluting speed is 1.5 mL per min and the eluents volume is 4 times of resin volume. In the optimal adsorption condition, the final yield of CHA is 5.06%. the content of chlorogenic acid is 78.26% in dry productin.

通过对比8种大孔吸附树脂对绿原酸的吸附效果，选用对绿原酸吸附解吸性能均较好的树脂对绿原酸吸附，吸附参数如下：吸附液绿原酸的浓度为0.204mg／mL、吸附液pH值为4、流速为3mL／min，解吸参数如下：解吸剂为30％乙醇、解吸剂流速为1.5mL／min、解吸剂使用量为4倍树脂体积，在此条件下，绿原酸得率为5.06％，产物中绿原酸含量为78.26％。

The percentage and capacity of fleas is affected by change in the blood-sucking time, percentage of fleas approaches 100% in 10 minutes.

结果证明，蚤的吸血率和吸血量随吸血时间的延长而增高，当吸血时间为10分时，雌、雄蚤的吸血率接近100%。

In addition, our agent produced by the Group of Portugal AMORIM only WICANDERS Kang cork wall panels, cork flooring and cork flooring IPOCORK; Republic of Korea DISEVEN polyester fiber sound-absorbing panels decorative arts; wooden sound-absorbing panels, wood wool sound-absorbing panels, sound-absorbing cloth, and other high-quality sound-absorbing panels Materials, in our pursuit of excellence, never-ending spirit of pragmatic innovation, good faith manner, Yuanyuguangda friends together for a better future.

另外，我公司代理葡萄牙AMORIM集团生产的WICANDERS唯康软木墙板、软木地板及IPOCORK益步高软木地板；韩国DISEVEN聚酯纤维吸音装饰艺术板；木质吸音板、木丝吸音板、布艺吸音板等优质吸音材料，我们本着追求卓越，永无止境的精神，务实求新，诚实信用的态度，愿与广大朋友携手共创美好未来。

In addition, our agent produced by the Group of Portugal AMORIM only WICANDERS Kang cork wall panels, cork flooring and cork flooring IPOCORK; Republic of Korea DISEVEN polyester fiber sound-absorbing panels decorative arts; wooden sound-absorbing panels, wood wool sound-absorbing panels, sound-absorbing cloth, and other high-quality sound-absorbing panels Materials, in our pursuit of excellence, never-ending spirit of pragmatic innovation, good faith manner, Yuanyuguangda friends together for a better future.

另外，我公司代理葡萄牙AMORIM集团生产的WICANDERS唯康软木墙板、软木地板及IPOCORK益步高软木地板；韩国DISEVEN聚酯纤维吸音装饰艺术板；木质吸音板、木丝吸音板、布艺吸音板等优质吸音材料，我们本着追求卓越，永无止境的精神，务实求新，诚实信用的态度，愿与广大朋友携手共创美好

In addition, our agent produced by the Group of Portugal AMORIM only WICANDERS Kang cork wall panels, cork flooring and cork flooring IPOCORK; Republic of Korea DISEVEN polyester fiber sound-absorbing panels decorative arts; wooden sound-absorbing panels, wood wool sound-absorbing panels, sound-absorbing cloth, and other high-quality sound-absorbing panels Materials, in our pursuit of excellence, never-ending spirit of pragmatic innovation, good faith manner, Yuanyuguangda friends together

另外，我公司代理葡萄牙AMORIM集团生产的WICANDERS唯康软木墙板、软木地板及IPOCORK益步高软木地板；韩国DISEVEN聚酯纤维吸音装饰艺术板；木质吸音板、木丝吸音板、布艺吸音板等优质吸音材料，我们本着追求卓越，永无止境的精神，务实求新，诚实信用的态度，愿与广大朋友携手共创美好未来。

In addition, our agent produced by the Group of Portugal AMORIM only WICANDERS Kang cork wall panels, cork flooring and cork flooring IPOCORK; Republic of Korea DISEVEN polyester fiber sound-absorbing panels decorative arts; wooden sound-absorbing panels, wood wool sound-absorbing panels, sound-absorbing cloth, and other high-quality sound-absorbing panels Materials, in our pursuit of

另外，我公司代理葡萄牙AMORIM集团生产的WICANDERS唯康软木墙板、软木地板及IPOCORK益步高软木地板；韩国DISEVEN聚酯纤维吸音装饰艺术板；木质吸音板、木丝吸音板、布艺吸音板等优质吸音材料，我们本着追求卓越，永无止境的精神，务实求新，诚实信用的态度，愿与广大朋友携手共创美好未来。

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。