查询词典 acoustics

This set of Chime bells assembled the cream of melting and founding techniques,acoustics,tempe- rament and industrial arts,representing the higher levels of science and technology in ancient China.

为发掘和继承古代科学文化遗产，揭示中国古编钟的制作工艺，结构特性和发音规律，促进国内外的科技文化交流，由哈尔滨科技大学、中国自然科学史研究所和河南省文物研究所合作，对浙川编钟进行了复制研究工作，采用新的工艺方法成功的复制出浙川编钟的复制品，在钟形、及几何尺寸、合金成分，金相组织、基频、振动模式以及音色等均与原钟一致，经有关专家鉴定，认为：复制钟较好的反映了原编钟的特征和面貌。

We take advantages of high speed of this DSP to implement the subband analysis filter and computation procedure of psycho-acoustics model.

利用DSP的快速运算能力，实现音频压缩编码过程中的子带滤波和听觉掩蔽计算，输出的码流符合音频MPEG层2标准。

To discuss phylogenesis of avian and to solute puzzle of taxology through avian acoustics,which integrate with morphologic,ecology,behavior and molecular biology and so on,is the primary trend of modern studies of avian vocalizations.

鸟声学与形态学、行为学、生态学、分子生物学等多学科相结合，探讨鸟类物种独立性、系统发育及帮助解决其它学科解决分类疑难是现代鸟声学应用于系统发育研究的主要趋势。

Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 2 : dynamic stiffness of elastic supports for translatory motion - Direct method.

NF S31-030-2-2000 声学和振动。弹性元件振动声学传输性能的实验室测量。第2部分：平移运动用弹性支架的动态劲度。

Golikov as the general and single-valued criterion for evaluating the acoustics of rooms and auditori- ums have been critically examined,with detailed discussionsconcerning:(1) the empirical foundation of the articulation-Q"functional relationship A= f,(2)the derivation of the"particular criterion"or the optimum re- verberation condition form Q",(3)the meaning of a time integration of the "noise-interference factoras viewed from the theorey of auditory perce- ption...

主要内容有：(1)以在不同的条件(如语言、测试人员、宣读方式以及声学场所等)之下的清晰度测验结果来验证 A=f函数的适用性，(2)判断了从Q&来推求以体积为参数的最佳混响时间的可能性，(3)，从听觉理论来讨论&混响干扰因子&对时间积分的意义，(4)讨论了原作者对&噪声因子&的看法，指出了&噪声因子&定义中的一些值得存疑之处。

On Room Acoustics Performance of Auditoriums in Culture Centers

我被班里推选为致告别词的毕业生代表，而且还要写一篇文章在公共礼堂里宣读。

The measurement system （called associated with a slowly rotating microphone RRS） is composed of a repeatedly inspirited sound source and the measured result is equivalent to that of using a round microphone array in room acoustics measurement.

室内声学测量中，在声源重复发射声信号的同时，将单个无指向性传声器缓慢而匀速地转动，其测量结果等效于以转盘转轴为中心的圆形传声器阵列，相应的测量系统简称为RRS。

A specialist in acoustics .When he compared people's ratings with acoustical analysis of the meows, he found very clear patterns.

当他用猫叫声的声学分析法将大家的评价进行比较的时候，他得出了非常清晰的模式。

This paper deals with the acoustics of ancient Greek and Roman theatres as it merges from an extensive investigation carried out within the ERATO project ( Identification Evaluation and Revival of the Acoustical Heritage of Ancient Theatres and Odea) financed by the European Commission.

论述了古希腊与古罗马的剧场音质。该研究是由欧共体资助的ERATO项目&古代剧场和表演场所声学遗产的鉴定、评价与振兴&的一部分。该项目对古希腊与古罗马剧场进行了较详尽的调研。

Professionalizing in acoustics products, it combines research and development, production, and marketing in the field of high-tec electronic information.

韶关市始兴华厦电器有限公司是一家专业从事音响产品，集研发、生产、销售于一体的民营高新电子信息企业。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。