It's important for sheds to pick flowers correctly

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In vegetable production, vegetable farmers all know how to prevent the occurrence of gray mold by picking flowers. However, after picking flowers, some vegetable farmers have not only failed to control the disease, but have become more serious. Some fruits are not well developed and the appearance of malformed fruit is also increasing. There are two main reasons for this:

The first was when the flower hit the head. If you scratch the stigma while picking flowers, the stigma will break easily. When the injured stigma is in the late growth stage, the growth rate of its young fruit will slow down, and serious fruit malformation will occur.

The second is to throw away the flowers and throw them on the ground. If he removes the stray flowers and then throws them on the ground, he loses the significance of controlling gray mold by picking flowers. Discarded flowers are thrown on the ground. After a flood of water, sporadic spores of gray molds are produced in large numbers, which can lead to infection of the whole shed.

Engine Piston Parts

The piston is one of the main moving parts of the engine, is composed of combustion chamber components.
The pressure of the gas piston through the connecting rod to the crankshaft, realize the change from heat energy to mechanical energy.
The work condition is very bad, and the temperature of 1400-1800 DEG C, and pressure
Up to 13MPa above the gas contact, greatly alternating thermal stress and mechanical stress.
And by the serious corrosion of gas, and under the condition of boundary lubrication and cylinder wall friction and strong impact 1 times.
The piston in high temperature, high pressure, strong corrosive gas contact so that it has enough strength and hardness,
Heat resistance and good thermal resistance, high fatigue strength and corrosion resistance. For high speed diesel Engine Piston also requires light as far as possible.
In order to reduce the inertia force.
Marine piston large low speed diesel engine of the crosshead is usually combined.
The heat treatment process by normalizing and annealing, and iron pearlite are ferrite organization, has good heat resistance.
Piston alloy quenched and tempered steel has better heat resistance and corrosion resistance. The skirt with nodular cast iron annealing treatment, with good wear resistance.

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