Only if it is correct to design and calculate and doesn't any break down for the deslagging machinery, it can ensure safety and reliability as well as economy operation for boiler unit.

The testing results proves that it is correct to adopt Colebrook formula as the Reynolds nu mber is in the range of 0.7×10 5～2.28×10 5.Through research,it is shown that the smoothing drag reduction law at smaller Reynolds number is the same with that at larger Reynolds number;

The conclusion of this text has better reference function to the departments at all levels in our country to make the international trade policy correctly, and enterprise -at all levels correct to launch international trade activity correctly.

The testing results indicated it was not correct that total hy- drocarbon was approximately equal to the sum of C_1,C_2, C_3,iC_4,nC_4 and the other component contents obtained from drilling fluid component analysis,or it was not correct to say total hydrocarbon was the volume fraction.

Results The DNA sequencing confimed the fragment obtained from RT PCR to be correct to code rat mGluR1 gene and pGEM T mGluR1 plasmid was successfully constructed.

The present paper proves that the T. Vorst problem 7.1 in [1] is correct to commutative Von Neumann regular rings, and discusses the K-regularity of Von Neumann regular rings.

And according to the light scattering data recorded by a 512 element linear photodiode array, the author measures the change of droplet diameter by the curve fitting of phase function and calculates the change of droplet weight based on it, with the final result correct to 1 ×10~7mg.

A comparison is made with the experimental data ofKestin andPilarczyk for which the present theory is estimated to be correct to 0·1%.

We demonstrate that the associated polarization tensor correct to the first order of the aspect ratio of the inclusion can be obtained in an analytical form.

An approximate solution, correct to order three in a small parameter, is established for the velocity field induced in a viscous fluid by the slow rotation of two tori.

The upper-bound estimate is correct to 0.0001, while the maximal slot width of 0.001 for R=3.2 au determines the error in the lower-bound estimate.

It is more correct to predict long-term strength with a single type of fracture over limited temperature ranges, i.e., 23 to 60 °C and 60 to 80 °C.

The conception of "inversion curve" is usually introduced in the discussion of the temperature effect for adiabatic throttling process of gases. However, the general features of an inversion curve are rarely discussed. It is the purpose of this paper to clarify the incorrect statements in certain text-books. As the results of such an analysis, the following conclusions are presented: 1. It is the following pair of equations that serves as the equation of an inversion curve: It is not exact to consider that the...

The conception of "inversion curve" is usually introduced in the discussion of the temperature effect for adiabatic throttling process of gases. However, the general features of an inversion curve are rarely discussed. It is the purpose of this paper to clarify the incorrect statements in certain text-books. As the results of such an analysis, the following conclusions are presented: 1. It is the following pair of equations that serves as the equation of an inversion curve: It is not exact to consider that the second equation of this pair of equations itself is the very equation of tile inversion curve. 2. The inversion temperature cannot be simply represented by v ( ). 3. The higher inversion temperature decreases with tile increase of pressure, while the lower inversion temperature increases with the increase of pressure. The higher inversion temperature and the lower inversion temperature must be treated seperately. 4. It is not correct to say that the lower inversion temperatures are all in the liquid region.

The dynamic rigidity method applied to the multi-disk rotating systems is presented in this paper. The formula of dynamic rigidity to the boundary conditions with flexible support is derived. It is correct to use the proposed formula which has been verified by the derivative frequency equation of the one disk rotating system on the flexible supports. At the end, a calculating example of a rotating system with two disks is given. Thus, the range of application of the dynamic rigidity method can be expanded....

The dynamic rigidity method applied to the multi-disk rotating systems is presented in this paper. The formula of dynamic rigidity to the boundary conditions with flexible support is derived. It is correct to use the proposed formula which has been verified by the derivative frequency equation of the one disk rotating system on the flexible supports. At the end, a calculating example of a rotating system with two disks is given. Thus, the range of application of the dynamic rigidity method can be expanded.

A study of the relations between structures and properties in Ti-6Al-4V alloy shows that tensile ductility, fatigue strength(HCF and LCF),fracture toughness, creep resistance and other properties not only depend on whether it's aa acicular or an equiaxed structure, but also depend on primary alpha percentage, prior beta grain size, transformed beta morphology and other conditions. Among these conditions, the transformed beta morphology is an especially important factor. For a certain property, an acicular structure...

A study of the relations between structures and properties in Ti-6Al-4V alloy shows that tensile ductility, fatigue strength(HCF and LCF),fracture toughness, creep resistance and other properties not only depend on whether it's aa acicular or an equiaxed structure, but also depend on primary alpha percentage, prior beta grain size, transformed beta morphology and other conditions. Among these conditions, the transformed beta morphology is an especially important factor. For a certain property, an acicular structure is better than a structure containing equiaxed alpha in one condition, but the former may be similar to or poorer than the latter in another condition. Therefore, it's not correct to compare these two types of structures unconditionally.Among all structures mentioned in this paper , comparison of the combination of various properties shows that the basket-weave structure is the best and the aligned structure is the poorest.