求大神帮我翻译下，万分感谢。

Automatic dosing system for acid etcher:

The process of adding solution:
1. The dosing pump delivers the oxidant and hydrochloric acid from the storage tank to the corresponding dosing cylinder.
2. The host sends a signal to activate the solenoid valve at the lower outlet of the dosing cylinder.
3. The solution flows into the acid etcher solution tank, and the dosing process is complete.

Process of adding pure water:
When the specific gravity is higher than the set value, the controller sends a signal to activate the solenoid valve. Pure water is injected into the acid etcher solution tank and the specific gravity decreases, and then the solenoid valve closes.

The principle is that the etching pump is delivered to the spray swing frame nozzle, and one branch pipe is delivered to the pH sampling tank to test the pH value through the sensor head. The pH is generally controlled at around 5.6. If it is lower than the set value, the quantitative pump starts, setting the flow rate and adding HCL and oxidant (H2O2 or sodium chlorate) according to the concentration, until the sensor head senses the set concentration and the quantitative pump stops working. The densitometer controls the addition of pure water, and the level of the addition box is controlled by the liquid level sensor.