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Some systems are under development or/and are designed to solve particular problems of mechanics of composite structures [12-14].
For these CM authors proposed to use a generalized term «multiscale multicomponent heterogeneous structure» (MMHS).
Horstemeyer Multiscale Modeling: A Review. // Practical Aspects of Computational Chemistry / J.
Integrated approach for geometric modeling and interactive visual analysis of grain structures.
Composite Structures.

We noticed that all the samples were crystallized into single-phase solid solutions of perovskite structure.
For pure BaTiO3, phase transformation from tetragonal to cubic structure occurs near to 120 oC [15,16].
The tetragonal structure stems from development of a polar axis along the [100] direction.
A single-phase perovskite structure of the BTS ceramics was identified by x-ray diffraction measurements.
Moreover, samples with x≥0.12 have cubic structure even on room temperature.

These processes cause an expansion of the mineral structure-swelling.
The reflex intensity decreases appreciably due to the heterogeneity of the montmorillonite structure.
This indicates that interlayer spacing within the mineral structure varies in thickness.
Chemistry & Chemical Technology, 13(3) (2019) 372-376
Theng, Structures and mineralogy of clay minerals, Handbook of Clay Science, Elsevier, Amsterdam, 2006, 19-86

Visualization technology is also widely used in structure design.
The structure design can not proceed without data processing.
The data used in structure design is always enriched and abstract.
Objective model is needed in traditional wind tunnel tests and structure experiments.
Meanwhile, we can use visualization technology to simulate structure experiments, and observe structure destroy and stress variation.

Chemical cleaning agents rely on a lot of cleaning, a greater impact on the environment, and chemical cleaning belong to mostly immersion cleaning, more limited by the specific structure of parts.
Steel at 20~400˚C, its expansion coefficient is (12.9~13.9)×10-6; and carbon deposit expansion coefficient is much larger than this, and the organizational structure with micro porous, then swelling and heaving at operating temperature  causing carbon deposit separation with metal body. 1.2 Chemistry reaction Sodium nitrate bath heated to above 380˚C decomposite into sodium nitrite and oxygen, nitrogen and oxygen released during 400-600˚C, 700˚C, release nitric oxide, and form a small amount of nitrogen dioxide and nitrous oxide at 775-865˚C.
Figure5（a）Carbon surface morphology Figure5（b）cross-sectional of parts Fig5 Carbon deposition organizational structure after cleaning 1.5 min Tab1 Composition of carbon deposition after cleaning 1.5 min element C O Na Si S Cl K Ca Fe Ni mass fraction 46.17 28.82 2.17 0.28 2.31 0.53 0.57 15.29 1.94 1.93 atom fraction 61.02 28.59 1.50 0.16 1.14 0.24 0.23 6.05 0.55 0.52 After1.5 min cleaning, the surface of carbon deposition covered with a layer of molten salt crystals in the 2 w times, and in glial layer surface pore structure has been filled with molten salt.
Table 1and figure 5 validate the porous structure of carbon deposition glial layer by molten salt residues.
Fig 6（a）Carbon surface morphology Fig 6（b）cross-sectional of parts Fig6Carbon deposition organizational structure after cleaning2.5 min Tab2Composition of carbon deposition after cleaning2.5 min element C O Na Mg Si P S K Ca Fe mass fraction 40.63 40.63 2.62 0.53 2.43 3.08 0.39 0.58 7.90 1.23 atom fraction 52.13 39.13 1.79 0.33 1.33 1.53 0.19 0.23 3.04 0.34 Surface appear lamellar structure after 2.5 min cleaning and drying.

Several cases of corrosion-induced failures in reinforced concrete (RC) structures have been confirmed.
Chloride-induced reinforcing steel corrosion is among the main issues of RC structure deterioration.
Saraswathy, “Corrosion Monitoring of Reinforced Concrete Structures - A Review,” International Jurnal of Electrochemical Science, vol. 2, pp. 1–28, (2007) [6] V.
Bahadori, 3 - Design considerations on cathodic protection for buried pipelines and marine structures., Cathodic Corrosion Protection Systems.
Bin Wan Jamil, “Ag/AgCl reference electrode based on thin film of arabic gum membrane,” Indonesian Journal of Chemistry., vol. 18, no. 3, pp. 479 – 485, (2018) [19] M.

Morphology and Structure.
To further study the fine structure of the nanowire, HRTEM images are presented in Figure 3c and 3d.
The same lattice parameters of these two kinds of nanowires with different growth directions verify that the products are of the same crystal structure.
The dosage of NaOH played a great role in tuning the unit size, structure and morphology of Zn-doped SnO2 hierarchical architectures.
Moskovits, Electronic control of chemistry and catalysis at the surface of an individual tin oxide nanowire, J.

The oriented structure was characterized by polarized Micro-Raman (inVia-Reflex).
Radiation Physics and Chemistry, 2013, 90: 92-97
Crystalline structure of poly (ethylene terephthalate) filaments[J].
Orientation and structure of drawn poly (ethylene terephthalate)[J].
Journal of Molecular Structure, 2000, 521: 127–136.

A large portion of slag can substantially decrease the hydration of lime in the hardened cement paste of the concrete and lessen the solidity of reinforcement corrosion protection in concrete structures.
Taylor, Cement chemistry, Mir, Moscow, 1996
Smolozyk, The effect of chemistry of slag on the strength of blast furnace cements, Zem-Kalk-Gips. 31(6) (1978) 294-296

The organic molecule of liquid crystal usually has the long chain structure and has multiple aromatic rings [5].
Liquid Crystal 5CB molecular structure (4-pentyl-4’-cyanobiphenyl) The chiral molecules do not have a structure plane, but possess different functional groups around the plane.
Optical modulator by structure MIS, (MIS is material as ITO, Isolator as liquid crystal, Semi-conductor as ZnO).
Hird, Introduction to liquid crystals: chemistry and physics, Taylor and Francis, 2004
Robinson, Liquid-crystalline structures in polypeptide solutions, Tetrahedron, 13(1961) 219–234