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Their grain size was 200～300 mesh.
The number of active atoms forming transition layer decreased and their diffusion capability dropped, too.

It comprises a number of shock pressure sensors located in a row beneath a target at which the bullet or projectile is fired, the sensors being adapted to detect the conical shock or pressure wave generated by the bullet or other projectile.
The grain and the bandwidth depend on the values and precision of the and .

Table 1 Shale Physical Properties Test Projects Results Test Projects Results Bulk density [kg/m3] 700 Water absorption [%] 3 Cylindrical compress strength [Mpa] 4.5 Softening coefficient ＞0.8 Grain shape factor ＜2.0 Boiling mass loss [%] 1 Loss on ignition [%] 0.2 Sulfur content (by SO3 ) [%] 0.3 Mud content [%] 0 Organic matte radioactivity qualified Mix Design.
Table 3 Thermal Expansion Coefficient of Some of the Test Data Specimen number Temperature grade Baseline rod reading Test result Par changes 1 25 0 24 24 24 0 50 0 26 25 26 2.5 75 0 28 28 27 4.4 100 0 31 31 31 6.5 2 25 -0.3 7.1 7.0 7.1 0 50 -0.5 9.2 9.4 9.1 2.4 75 -0.6 12.1 12.4 12.3 4.6 100 -0.7 14.5 14.2 14.4 6.7 Thermal expansion coefficient, see equation (1): (1) In above: —Room temperature sample length, mm;        —Sample length growth between room temperature and 100 ℃, mm;         —Temperature rise, ℃.

They help to reduce image aberrations and the number of components in optical systems.
Truing experiments led to satisfying results concerning the tool’s shape but also induced insufficient grain protrusion resulting in considerably reduced material removal rate.

The broadened diffraction peaks are indicative of the ultrafine grains.
Nanometre particles have better electromagnetic wave absorbing properties than large particles, because there are a larger number of particles in a certain volume and multiple reflections and stronger scattering to the incidence wave caused by relatively large reflection and scattering cross section.

They have attracted the attention due to low cost and flexibility associated to their production; simplicity; large number of detectable gases.
The sensing mechanism of ZnO belongs to the surface-controlled type, in which the grain size, defects, and oxygen-adsorption quantities play important roles in sensing response.

(1)The proposed monitoring units are slave machines, they are installed in each ward locally, each monitoring unit would allocate 2 to 8 sensors according to the number of ward bed, and then handle with the collected temperature data, send the test results to the host PC at the same time.
Ma, “The wireless temperature control system of big grain depot”, Machinery Design& Manufacture, No. 9, pp. 41-43, 2008

The reasons are 1) The smaller stomata size decreases the amplitude of air convection and reduce the convection heat transfer efficiency; 2) The numbers of porosity cells grow reduce the radiation heat transfer efficiency.
The sizes of the spherical pores caused by decomposing the polystyrene grains are all smaller than 1.7 mm and decrease when small polystyrene particles are used.

is wave number and .
It is assumed that there exist volumes large compared to pore/grain sizes but small compared to wavelength and that each volume element is describable by the average displacement.

A number of urban rail transit lines built and put into use in succession [1].
Use the rubber roller to compacting the carbon fiber in the fiber direction steadily, making the resin overflow from both sides, ensuring close-grained without hole.