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It presents a relatively detailed description of th e epidemic condition, of viral diseases of fishes,method of their prevention,con trol and treatment; the characteristic of pathogens;variation of hosts;and the h istopathological features.It aims to make the culturist realize that viral disea ses have broken out frequently in the world, and pay more attention to it.

摘 要 综述了中国台湾地区及世界其他主要海水养殖国家和地区的养殖鱼类病毒性疾病的流行情况、防治方法、病原特征、宿主范围和组织病理学特征，目的在于让养殖者了解鱼类病毒病已在世界范围内频发，希望能引起各方面的重视。

The studyshows that Chetaev's model for mechanicalsystems with non-holonomic con-straints can be reduced to three essential factors:(1)a kind of direct sum ofjet bundles according to the constraints,(2)D′Alembert's principle,(3)pos-tulate of ideal constraints.The first among the three factors only has geomet-ric significance and the second is a fundamental physics principle independentof any constraints.

研究表明，非完整约束力学系统的Chetaev模型归结为三个要素：(1)射丛按约束的直和分解；(2)D′Alembert原理；(3)理想约束条件，其中(1)仅具有几何意义，(2)为与约束无关的基本物理原理，而(3)是对约束力学系统的限制条件。

The results show that, when the volume of the secondary room is 1/3 of that of the primary room,the sound energy decay in the primary room is greatly in- fluenced by the secondary room at an aperture size of less than 10% of the wall,that the energy decay curve and the coupling con- stant in the primary room gradually change with the aperture size,and that the effect of the secondary room on the acoustics in the primary room is uniform.

发现在耦合空间体积与主厅体积比为1/3的条件下，当耦合窗面积与隔墙面积比小于10%时，耦合空间对主厅的声能衰减有较大影响；主厅的声能衰减曲线和耦合常数随开口的改变而逐渐发生变化：耦合空间对主厅各点音质的影响比较均匀。华南理工大学物理科学与技术学院；华南理工大学物理科学与技术学院广东广州 510640；广东广州 510640

Employee stock options can provide you with a substantial source of deferred income and permit you to con...

员工股票选择权可以向你提供相当的收入来源，让你递延行骗

There is an index degression con-elation between the duration of fog and time.

雾持续时间随时间变化呈指数递减。

Why do they delude themselves and attempt to con us?

为什么他们光是自我催眠不够，还企图蒙蔽我们呢？

The deep source of western rule by law lies in the separation of country with demagogic society and interactive development,that is in the course of country r e -construction and demagogic social independence movement,the demarcation and con flict of power with right give rise to the production of legal order,but the adv ocating of townspeople social spirit promotes the legal formalization movement.

内容提要西方法治产生的深层根源在于其国家和市民社会的分离和互动发展，即在国家重建和市民社会自由化运动过程中，权力和权利的界分和冲突导致了法律秩序的生成，而市民社会精神的张扬则推动了法律形式化运动。

This paper analyzes mainfactors that influence the dephosphorization of medium-high carbon steel s in con-verter steelmaking process.

分析了转炉冶炼中高碳钢条件下影响脱磷的主要因素。

Rat models of acute blood stasis, hair depilation and qi-deficiency was respectively established, and in each group,the rats were again divided into 3 subgroups which were subjected respectively to treatment with Shengfaling at normal con-centration, Shengfaling at half the normal concentration or with 65% ethanol as the control.

分别建立大鼠急性血瘀、脱毛、气虚模型，用正常浓度、1/2浓度生发灵酊剂和空臼对照液3种药物分别进行处理，检测各有关指标。

In 21 cases of hand dermatitis the aeroallergen role was investigated with, serv-ing as a control,21 cases of urticaria,11 cases of eczema and 8 cases of dermatomycosis,In con-trast to urticaria,eczema and dermatomycosis,the result displayed a·significant increase of thepositive rates and an enlarged wheal diameter for polyvalent mold II and polyvalent in-sects(P.05,P.01)in hand dermatitis .

对21例手部皮炎患者进行了吸入变应原的研究，以21例荨麻疹、11例湿疹、8例皮肤癣病作为对照。结果发现手部皮炎与荨麻疹、湿疹、表皮癣菌病相比，多价真菌Ⅱ、多价昆虫变应原阳性率明显增高

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。