A parameter optimization method whose goal is to make regulating index of excitation regulating system reach national standard is introduced. The method points out that unified setting parameter should be used on the same type of unit with the same excitation system and the practicality of the optimization method is verified on an example of 300MW unit.

Chapter 2 puts forward the basic method of linkage mechanism scheme design based on unit combination. Through analyzing the unit-character lies in mechanism design, definition and classification of design units are given and modeling of design units are introduced. Then, the basic type of unit combination are studied.

The methodology here are still in the category of empirical approximated analysis, so that some views developed on this basis are influenced more or less by the accuracy of the elementary data-processing and the type of unit hydrograph.

The structure and function of the thermal control system of a 500MW coalfired turbo-generator made in Czechosiovakia is described in an ail-round way and features of this thermal control system are analyzed. This will give a great reference to improving the thermal control system for the same type of unit.

A parameter optimization method whose goal is to make regulating index of excitation regulating system reach national standard is introduced. The method points out that unified setting parameters should be used on same type of unit with same excitation system and the praticality of the optimization method is verified on an example of 300 MW unit.

A general way to determine which system of leadership to be adopted in a certain type of unit, depends on the main task such unit assumes, the function the Party and administrative organization exert respectively in finishing the task. For the cake of beffer implementation of the Party line and policy, and the completion of task, a stipulation about which system of leadership is made on the basis of practical expriences .

Furthermore, we examined whether homologous recombination may also result in excision of a different type of unit-length PCV genome (QH) from identical HTT constructs to generate LH.

Eleven species of subg.Strobus were examined and all lacked the long type of unit of radiata pine.

The main type of unit response in RPN was primary excitation, whereas in NP it was primary inhibition.

The type of unit response depends on the relationship of the stimuli to the animal's motivational sphere.

The type of unit response could vary depending on the frequency and repetitiveness of the stimuli but was otherwise independent of the type of stimulation.

By analyzing the records of some large storm floods and extraordinary ones taken place during recent years in several districts in China, this article sets forth a method based on Nash's model of instantaneous unit hy-drograph. The proposed method can be applied to estimate different unit hydrographs relevant to different values of rainfall intensity respectively for different time interval in one flood process.Preliminary results of nonlinear relationship are obtained between the lag of an unit hydrograph and...

By analyzing the records of some large storm floods and extraordinary ones taken place during recent years in several districts in China, this article sets forth a method based on Nash's model of instantaneous unit hy-drograph. The proposed method can be applied to estimate different unit hydrographs relevant to different values of rainfall intensity respectively for different time interval in one flood process.Preliminary results of nonlinear relationship are obtained between the lag of an unit hydrograph and effective rainfall intensity, as well as between the peak and runoff volume of an unit hydrograph, through the analysis and calculation of 176 floods from 25 small catchments (F =41-1440 km2 ) . It is pointed out that the nonlinear response of the unit hydro-graphs to effective rainfall intensities, in the case if rainfall intensities are under some critical values about 40-50 mm per hour, is highly evident, but while beyond that limit, it becomes ambiguous or approaches to a linear relationship. Meanwhile, some preliminary synthetic results are obtained for nonlinear indices applied to the mountainous district of the Huai River. These may be of some reference value to the solution of the problems concerning the derivation, variation and extrapolation of unit hydrographs.The methodology here are still in the category of empirical approximated analysis, so that some views developed on this basis are influenced more or less by the accuracy of the elementary data-processing and the type of unit hydrograph.

Since the spatial pattern for the cotton bollworm eggs in the cotton field is in agreement with the negative binomial series and the characteristics of the vertical distribution of the eggs on the cotton plant is more greater in the upper than in the lower, two-stage sampling technique based on the mean crowding (x*) - mean( x Relationship (Kuno, 1976) is used for allocating samplesThe number of sample cotton plant required to estimate the density of egg at a 10% level of precision is 60, and 15 leaves or squares...

Since the spatial pattern for the cotton bollworm eggs in the cotton field is in agreement with the negative binomial series and the characteristics of the vertical distribution of the eggs on the cotton plant is more greater in the upper than in the lower, two-stage sampling technique based on the mean crowding (x*) - mean( x Relationship (Kuno, 1976) is used for allocating samplesThe number of sample cotton plant required to estimate the density of egg at a 10% level of precision is 60, and 15 leaves or squares of each plant are sampled.A change in the type of sampling unit usually affects both the cost of taking the sample and the precision obtained from it. The determination of optimum type of unit may therefore be important in the economies of samp'ing. According to the area occupied by a colony (Fig.) a suitable combination of sampling unit is proposed. 6 plants per locality (ie. 2 rows with 3 plants for each) are better than the single plant. It is that 6 plants taken from 10 localities in a cotton field.The new sampling technique for the egg stage of cotton bollworm could be raise efficiency 2.2 - 2.6 fold Than that of the sampling method usually used,

Based on the theory of fluid mechanics this paper suggests that different-size particles can be satisfactorily flocculated if free turbulence occupies almost all the space of the flocculator. This hypothesis has been proved in practice. This type of units, i.e., a grid flocculator, features high efficiency of flocculation, low energy consumption and great economy of space.According to theoretical analysis, the detention time of the well-designed units may be shortened to 3-4 minutes, with the effect...

Based on the theory of fluid mechanics this paper suggests that different-size particles can be satisfactorily flocculated if free turbulence occupies almost all the space of the flocculator. This hypothesis has been proved in practice. This type of units, i.e., a grid flocculator, features high efficiency of flocculation, low energy consumption and great economy of space.According to theoretical analysis, the detention time of the well-designed units may be shortened to 3-4 minutes, with the effect of flocculation being unchanged.