上吸

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 basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.

文中对汽车碰撞安全性的设计理论和方法进行了归类和总结，其中包括经验法、解析法、多刚体动力学法、试验法以及有限元方法等；重点介绍了碰撞有限元法的基本理论和有关算法，涉及到有限元求解控制方程、单元离散、沙漏模态控制、时间积分、材料模型和应力修正、薄壳单元算法以及接触碰撞界面算法等，探讨了有限元计算中的材料模型参数获取技术，开发了相应的材料试验装置及材料模型参数反求软件，在此基础上进行了基本的碰撞仿真算例和试验对比研究；文中通过应用有限元方法研究了薄壁构件的碰撞吸能特性，指出了设计薄壁吸能构件时需要考虑的几个主要影响因素，即焊点、壁厚、横截面和预变形等；在关于车辆部件的碰撞安全性能设计中进行了吸能转向机构和自适应安全气囊的仿真研究，提出了吸能转向机构和自适应安全气囊的仿真研究方法；文中最后探讨了整车碰撞性能的设计与改进方法，提出了以理想碰撞特性为目标，采用分段加速度或者根据碰撞时间进行设计的反推设计法、部件吸能仿真优化设计法等量化设计方法，并通过综合应用文中所讨论的相关技术进行了整车碰撞性能的设计与改进实例研究，所选定的车型是大众化的普通轿车和碰撞安全性基础较差的微型面包车，研究结果表明，本文所提出的设计与改进方法是适用而有效的，具有重要的工程实用意义和价值。

More than 10 years, I heard the company's customers valuable advice and technical absorption silk gun manufacturers, continue to improve, accumulated experience in various aspects, such as: absorption of silk Qiangtou, brothers and ceramic manufacturers have adopted easy Pengsui suction head, will not only affect production , Also increased equipment costs, we head into metal and greatly reduce the cost, a further absorption silk guns into the trachea and the row of silk from the centre, other manufacturers in 36 mm, and we changed to 38 mm, for users to replace the intake manifold, Pai more convenient when the silk, silk guns in the absorption of the two guns, made the point that hole, so it's suction row wire was also larger, users have won, we Asia and China over the years the company pursues " Is the quality of corporate life, the user is God, reasonable prices, better quality,"the purpose, we now more than 100 domestic and chemical fiber enterprises have long-term business, the company specializes in chemical fiber processing machinery parts.

十多年来，我公司听取了用户的宝贵意见，在吸丝枪制造技术上，不断改进，积累各方面经验，如：吸丝枪头子，兄弟厂家都采用陶瓷吸头容易碰碎，不但影响生产，还增加设备费用，我们改成金属头子，大大降低了成本，再有吸丝枪的进气管与排丝管中心距离，其他厂商于36mm，而我们改为38mm，为用户在更换进气管、排丝管时更为方便，在吸丝枪内的二级喷头中，孔的角度作了修正，所以它的吸力排丝量也较大，得到用户的好评，我们亚华公司多年来奉行"质量是企业生命，用户是上帝，价格合理，质量更优"的宗旨，目前我们与国内一百多家化纤企业有着长期业务往来，本公司专业加工化纤机械配件。

The results showed that:(1) compared with never smokers, former smokers used more medical services of all types with the except of herb doctor care. but only differences in number of emergency visits (by 4.5%), rate of and number of days of self-medication with western drugs (by 1.39 times and 18.7%, respectively) were statistically significant after adjusting for other sociodemographic variables; and (2) compared with never smokers, current smokers used more hospital care, emergency care and self-medication with western drugs, but only differences in rate of and number of days of self-medication with western drugs (by 0.63 times and 6.6%, respectively) were statistically significant after adjusting for other socio-demographic variables.

结果显示：(1)已戒菸者除中医门诊外，其他各类医疗服务的利用率与利用量皆高於从不吸菸者，但在控制其他自变项以后，只有急诊次数（增加4.5%）以及自服西药的比率（增加1.39倍）与天数（增加18.7%）上的差异具统计显著意义；(2)目前吸菸者则只在住院、急诊以及自服西药的利用率与利用量上皆高於从不吸菸者，但控制其他自变项以后，亦只有自服西药的比率（增加0.63倍）与天数（增加6.6%）上的差异具统计显著意义。

objective to observe the effect of liver function to long-term burning caffeine sodium benzoateinhalation.methods to compare the liver function of long-term inhalation burning caffeine sodium benzoate group with that of control group by modular p800 making in usa.results between term of long-term burning caffeine sodium benzoate and term of controls were significantly different at total bilitubin,there were different at glutamic pyruvic transaminase,glutamic oxaloacetic transaminase,creatinine (p.05).conclusion long-term inhalation of the burning caffeine sodium benzoate would lead to significantly effect on liver function.

目的 探讨长期烫吸安钠咖对肝功能的影响。方法应用美国生产的modular p800仪器，对烫吸安钠咖组36例及正常对照组14例测定肝功能情况，对结果进行比较分析。结果烫吸安钠咖组与对照组比较，烫吸组总胆红素较对照组的含量明显降低，在统计学上差异有显著性（p＜0.01）。烫吸组谷丙转氨酶、谷草转氨酶、肌酐较对照组升高，在统计学上差异有显著性（p ＜0.05）。结论长期烫吸安钠咖对肝功存在明显的影响。

Structure is willing to work rationale : the paper to paper on stage by infrared absorption into the lamp drying wind hield, After Road from the conveyor belt and crushed round brush and brush so that the paper dust from the suction fan sucked out; B-type structures of the A-type unction on the basis of additional wetting a paper on the roll so that the small amount of residue below dust by wetting roll away, except on the following powder to the best results.

型结构工作愿理：纸张在给纸台上通过红外灯管烘干送入吸风罩内，由输送带经过道轮刷辗和排刷使纸张上的粉尘由吸风机吸走；B 型结构是在 A 型功能的基础上增设一道润湿辊使纸张上下面残留的少量粉尘由润湿辊带走，使上下面除粉达最佳效果。

Moreover, taking the adsorption process from oven-dry state to the equilibrium state in 20℃,60%RH environment as an example, the dielectric relaxation based on the reorientation of adsorbed water molecules was separated out from that based on the methylol groups in the amorphous region of wood cell wall.

以绝干状态→20℃，60%RH 平衡态的吸湿过程为例，将基于吸着水分子回转取向运动的介电弛豫与基于木材无定形区中伯醇羟基回转取向运动的介电弛豫进行分离，并在 Eyring 的绝对速度反应论的基础上，求得了与吸着水分子进行回转取向运动相关连的热力学量，得到了在吸着过程中吸着水分子与木材吸着点之间的氢键结合随着水分吸着进程的变化情况。

A cleaner includes a suction motor mounted in a cleaner main body, and generating a suction force; a filter for collecting dust or filth sucked by the suction force generated at the suction motor; a suction head connected with the filter by a suction tube, and sucking dust and filth on a floor; a brush installed in the suction head so as to ascend/descend in a vertical direction, and sweeping dust and foreign substances into the suction head; and a brush height control apparatus installed in the suction head, and making the brush ascend/descend in a vertical direction.

一种吸尘器，它包括安装在吸尘器主体内并且产生吸力的吸尘马达；收集由吸尘马达所产生的吸力吸入的尘土或污物的过滤器；通过吸尘管与过滤器连接的吸尘头，吸尘头吸入地板上的尘土和污物；安装在吸尘头内从而可以在垂直方向上上升/下降的刷子，它将尘土和异物扫入吸尘头；和刷子高度控制设备，它安装在吸尘头中，并且使刷子在垂直方向上上升/下降。

On the basis of experiments, the mechanism of phosphorus gettering for crystalline silicon were suggested.

本文在对常规磷吸杂的基础上，研究了晶体硅材料的变温磷吸杂和快速磷吸杂，并在实验的基础上对晶体硅材料磷吸杂机理做了深入的研究，得到了如下主要结果：对晶体硅材料来说，恒温磷吸杂有一个最佳的吸杂温度范围，高于或低于该温度吸杂效果都不理想。

Transfer the croutons onto kitchen pepper to remove excess oil.

放在厨房纸巾上吸乾多余的油分，放置一会儿，使之冷却。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。