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The grain diameter is about 1cm.
The reason may be that the H+ produced from hydrolysis reacts with OH- and results in the decrease of number of free ions.

After grinding, all samples was filtered with a 200 mesh sieve to get the same grain size and the final result is carbon powder as shown in Figure 1.
Then there is an aromatic ring C=C bond at a wave number of 1592 cm-1, and an absorption band of 1163 cm-1 indicates a C-O-C vibration which is an ether structure.

Fig. 4c shows a fractured strut surface of the biomorphic TiO2, evidencing the TiO2 grains which form the sponge struts.
The numbers in parenthesis indicated the error in the last digit.

Finally near the mid-section and towards the free-side of the ribbon, equiaxed dendritic grains of Al form, as shown in Fig.1(g).
According to the recently assessed equilibrium phase diagram of Al-Sm shown in Fig.3 [15], the tetragonal Al11Sm3 phase corresponds to the high temperature β-Al11Sm3 phase which has the space group I4/mmm (space group number 139).

A number of new materials are being investigated, especially steels of greater and greater strength.
The structure is uniform and the average grain size of ferrite amounts to 15-20 µm.

Growth and dissolution of zeolite 4A phases reach to the equilibrium when the crystallization reaction continue for a certain time, and then extending the crystallization time, the number of the phases will not increase, instead, the form of the phases particles will appear passivated edges, or even mixed phases.
This is mainly that induction period exists in the hydrothermal synthesis of zeolite 4A crystallization process using fly ash as raw material, in which grains begin to form spontaneously, and grows with crystallization time lengthens and the rate of crystallization increases rapidly, so the crystallinity of synthetic zeolite increases.

There are strong expansibility and water-absorbing quality between mineral grains.
The number and length of bolt in key parts, such as bottom angle, should be appropriately increased. 3) At last, spraying 150mm thick concrete, this step can be temporarily delayed.

With aP increasing, material impacting tool sharp grew in number at Z axial and X axial, resulting in FX and Fz rising.
From the pictures, there aren’t grain boundaries and crystal lattices in those white belts, and those areas are different from the normal metallographic structure.

For example, after mixing with paraffin, the grain of natural resin will precipitate from the mixture.
Table 2 The cutting performance situation of hard wax-based material with high strength and toughness Serial number Cutting speed [r/min] feed [mm/r] Cutting Depth [mm] Cutting morphology Cutting accuracy Surface roughness [µm] Lathing 500 0.3 3 Continuous flexible belt IT10 6.3 800 0.15 1 Continuous flexible rope IT9 3.2 1200 0.08 0.5 Continuous flexible line IT8 3.2 Milling 300 0.3 3 Flexible tatter wire IT10 6.3 400 0.15 2 Flexible tatter wire IT10 3.2 500 0.1 1 Flexible tatter wire IT9 3.2 Note: cutter diameter Φ80mm From the process and result of cutting test, we can see that the hard wax-based material with high hardness and toughness has the same cutting performance with steel.

Introduction Nitrogen deficiency in winter wheat is characterized by leaf chlorosis, reduced net assimilation and relative growth rates, lower leaf area, phytomass and grain yield [1].
Data are presented as average number.