宽口的

The prevalence and abundance of the acanthocephalan exhibited very similar and significantly seasonal change patterns in O. uncirostris and H. bleekeri bleekeri. The infection levels were higher in autumn and winter, but lower in spring and summer. However, the infection levels in Z. platypus kept stable all the year round. There were significant differences among the overall abundance of the acanthocephalan in the three host populations. Nevertheless, the frequency distribution of the parasite in the three kinds of fish was over-dispersed in most seasons and in total as measured by the variance to mean ratio. The variance to mean ratio was not found related to the infection levels.

在感染率和感染丰度方面，寄生于马口鱼和油的木村小棘吻虫呈现出显著的季节变化：秋冬季节感染率和感染丰度都比较高，而春夏季节则比较低；与此不同的是，寄生于宽鳍鱲中的木村小棘吻虫则全年都维持着较稳定的感染水平；木村小棘吻虫种群在三种宿主体内的总体感染丰度差异显著，但都呈聚集分布，三者的方均比与感染率和感染丰度之间无显著相关关系。

Based on lots of indoor observation, tests and analyses by 4 wells in the two areas, it is discovered that authigenic quartz in sandstone can be divided into three kinds:narrow,width and fine crystal. Species and composition of sandstone are the main factors which controled the formation of authigenic quartz.

对周口和通许两地区4口井砂岩的薄片观察、多种测试、分析，发现砂岩中石英的增生可分窄边型、宽边型和自形边型3种，增生石英的发育情况与砂岩的类型、成分等密切相关。

With the help of some investigation data about the research area before the project ,this article describes some distinctions about the Rushan Bay's sedimentation power in such ways .First of all ,it mainly uses tidal current power as well as wave power to analyse sediment condition in research area .The contents contain :the relation between distribution of sediment and hydrodynamic elements; sediment discharge of unit width and longshore sediment transport ,analysis of sediment transport tendency ;comparison of sea chart in different time with AutoCAD、Suffer、VB tools, analysis of erosion and siltation ;description of marine physiognomy and its relation with hydrodynamic elements .

本文通过工程建设前期的有关调查资料，采用如下方法对乳山湾的沉积动力特征进行研究：首先，文章以潮流动力为主，结合波浪动力对研究区的泥沙状况进行了分析，分析内容包括：沉积物平面分布及其与水动力因素关系；口门附近水下动力地貌分析，揭示其形成与水动力因素的关系；通过单宽输沙、沿岸输沙计算，对泥沙运移趋势进行分析；利用AutoCAD、Suffer、VB等工具，采用海图水深值对比的方法，分析乳山湾海底蚀淤状况。

A hoof ed mammalfound in forests of northern North America and in Eurasia and having a broad,pendulous muzzle and large,palmate antlers in the male.

驼鹿一种有蹄的哺乳动物，发现于北美洲北部和欧亚大陆的森林中，长有下垂的宽鼻口，雄鹿有大的掌状鹿角

Moose : A hoofed mammal found in forests of northern North America and in Eurasia and having a broad, pendulous muzzle and large, palmate antlers in the male.

驼鹿：一种有蹄的哺乳动物，发现于北美洲北部和欧亚大陆的森林中，长有下垂的宽鼻口，雄鹿有大的掌状鹿角

A hoofed mammalfound in forests of northern North America and in Eurasia and having a broad,pendulous muzzle and large,palmate antlers in the male.

驼鹿一种有蹄的哺乳动物，发现于北美洲北部和欧亚大陆的森林中，长有下垂的宽鼻口，雄鹿有大的掌状鹿角

Consumers in the purchase of wood floors, first thought of using the floor because it is the most traditional, most popular and most popular floor has a floor market types : Kei Hau floors, ping-size model to a longer-wide were : Master floors, that is grounded; special needs, personalized : paste-up fight side floors, vertical wooden floor.

消费者在购买木地板时，首先想到的是实木地板，因为它是最传统、最普及、最深入人心的地板，至今市场出现的地板种类有：企口地板、平口地板；尺寸较长转宽的有：集成地板、指接地板；特别呈现时代感、个性化的有：拼花拼方地板、竖木地板等。

Using fluid dynamics FEM (two dimensional, three dimensional andaxisymmetric) and three dimensional acoustic FEM in meticulous analysis ofexpansion muffler structure, this paper studies the influences of each mufflercomponents' position, dimension, form and quantity on the fluid dynamic andacoustic performances;therefore the paper indicates that the end of the intruding tubeis the linchpin of the fluid dynamic performance of the whole muffler structure, thespringhead of muffler fluid dynamic performance is the smoothness of air current, themain factor which affects the acoustic attenuation value of expansion chamber muffleris the grade of saltation of the section of air conducting access, and the attenuationvalue of specific frequency can be dramatically enhanced by carefully designing thelength of expansion chamber.

本文通过流体力学有限元方法和三维声学有限元方法对扩张腔消声结构的参数化模型进行了细致的分析，研究了这种结构的各个组成部份的位置、大小、形状和数量对其流体力学与声学性能的影响，指出插入管端口是影响整个结构流体力学性能的关键，消声结构流体力学性能的根源是气流通过时的平稳程度；影响扩张腔消声量的主要因素为声波传播通路截面突变的程度，并可以通过精细的设计扩张腔轴向长度获得宽频或指定频率消声量的大幅度提高。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷