种差异

Family business is the oldest enterprise type. The absolute majority of enterprises are family businesses.

家族企业是商品生产中出现最早的一种企业形式，它的数量最多、内部结构与关系最为复杂、规模差异也最为显著。

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。

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。

Among the students having the same learning style but receiving different teaching methods, the learning achievement showed a significant difference for those two learning styles of "accommodator" and "converger".

三、相同学习风格的学生接受不同教学法时，对「调适型」及「聚敛型」两种学习风格学生而言，其学习成效有显著差异，且接受数位学习教学法的学习成效均明显优於传统教学法的成效。

Results:Sharp angle was decreased and acetabulum forward rotation angle increased in two kinds of osteotomy.

结果：两种截骨方法术后Sharp角均减小，髋臼向前旋转角度均增大，统计学上有显著差异(P＜0.05)。

Linear regression analysis showed that the product of Freundlich adsorption constants, Kf(1/n), had a positive correlation with 1/Sw and/Sw, showing that the adsorption of acetanilide herbicides on soil was mainly controlled by the content of soil organic matter and the solubility of herbicides.

四种酰胺类除草剂的 Freundlich 吸附常数 Kf(1/n)与1/Sw 、/Sw 有很好的线性相关性，这说明它们在土壤中的吸附主要受土壤有机质含量控制；分子中酰胺 N 的醚取代基的结构差异造成的溶解度差别，是导致不同酰胺类除草剂在土壤上吸附差别的主要原因。

The results showed that the soil catalase and dehydrogenase activities, soil microbial biomass N and microbial biomass C were restrain somewhat by four acetanilide herbicides at the beginning of cultivation, but can recover soon.

研究表明，培养初期丁草胺、乙草胺、丙草胺和异丙甲草胺对土壤过氧化氢酶和脱氢酶活性、对土壤微生物量氮和微生物量碳有不同程度的抑制，但均能很快恢复，四种供试酰胺类除草剂对土壤生态的影响不大，除草剂之间也没有表现出显著差异；培养初期rac-异丙甲草胺和S-isomer高浓度处理均比常规用药量处理对土壤酶、土壤BN和Bc的影响大。

Introduce the composition of naphthenic acid and two methods about the determination of acid number .

介绍了石油酸的组成及国内测定原油酸值的两种方法，对采用不同方法测定原油酸值产生的差异进行分析，建议采用电位滴定法测定原油的酸值。

The purpose of this study was to compare the intonation of English focus words acoustically in three positions and in two sentence structures between American native speakers and Taiwanese advanced English learners.

本研究的目的是要比较在台湾的英语学习者和美国以英语为母语的说话者在英文焦点字在三个句中的位置和两种句型上的差异。

Scores of the three factors are diffent in gender and grade;② There are significant relations in factors of Idolatrous Structure, between factors of Characters of Idolatry and Ego-evaluation; There are three types of idolatry in Secondary School students: Perceptual Adorer (21.00%), Intermediate Adorer (32.88%), Rational Adorer(46.12%).

三因素在性别和年级上存在差异；②中学生偶像崇拜结构内部各因素之间、崇拜特徵与自我评价在许多因素上存在显著相关；③中学生偶像崇拜可分为3种类型：感性型崇拜者(21.00%)、中间型崇拜者(32.88%)、理性型崇拜者(46.12%)，按积极性排序依次为理性型崇拜者、感性型崇拜者、中间型崇拜者。

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。