Sampling standard in soil testing formula

The construction of the evaluation index system is an important part of the soil testing and fertilizer application system, and is the main method for screening and verifying soil nutrient testing methods.
In order to reduce the impact of soil nutrient test system errors on .......

Correct installation of tanker

First, the refueling tanker must be used in a dry environment, and it is strictly prohibited to work in the open air. The installation position of the tanker shall comply with the relevant provisions of the local gas station construction and fire protec.......

Correct use of brakes

Correct use of brakes

The brake system is often supplemented with lubricating oil, which is well known to the majority of vehicle owners. On the other hand, for the brake fluid, many vehicle owners often buy new vehicles until the vehicles a.......

Do-it-yourself car troubleshooting

When we drive out, it is very likely that the car will be anchored. This requires us to have some simple troubleshooting knowledge. Now we will introduce some simple and easy emergency repair methods as follows:

1. Tank damage

When the motor.......

High-altitude truck manufacturers teach you how to prevent high-altitude vehicles suffering from "heart attack"