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The engine block constitutes the framework of the engine and serves as the installation base for all the mechanisms and systems of the engine. It houses all the main components and accessories of the engine and bears various loads. Therefore, the engine block must have sufficient strength and rigidity. The engine block assembly mainly consists of parts such as the cylinder block, crankcase，cylinder liner, cylinder head, and cylinder gasket, overhead camshaft, piston, balance shaft, crankshaft and connecting rod mechanism and etc.

Wind turbines convert wind energy into mechanical power, which drives the rotor to rotate and ultimately generates alternating current electricity. Wind turbines typically consist of wind wheels, generators (including components), yaw devices (tail fins), towers, speed-limiting safety mechanisms, and energy storage devices, among other components.

Solar power generation is a device that uses battery components to directly convert solar energy into electricity. The photovoltaic power generation system is mainly composed of solar cells, batteries, controllers and inverters. Among them, the solar cells are the key component of the photovoltaic power generation system. The quality and cost of the solar cell panels will directly determine the quality and cost of the entire system. Solar cells are mainly divided into two types: crystalline silicon cells and thin-film cells. The former includes single-crystal silicon cells and polycrystalline silicon cells, while the latter mainly consists of amorphous silicon solar cells, copper indium gallium selenide solar cells and cadmium telluride solar cells.