Walk-behind road rollers, as the name suggests, are road rollers supported by both hands for compaction operations.

①Whether it is uphill or downhill, the bottom layer of the asphalt mixture must be clean and dry, and the asphalt binding layer must be sprayed to prevent the mixture from slipping during rolling.

1. During operation, the road roller should start first before it can start to vibrate, and the internal combustion engine should be placed at a medium speed first, and then adjusted to a high speed.

Low temperature makes it difficult to start the engine, mainly due to the increase in the viscosity of the lubricating oil, the decrease in the working capacity of the battery and the poor atomization of the fuel.

flatbed trailer safety technical operation rules.

Agricultural spraying uavs are a brand-new spraying method for crop protection against plant diseases and insect pests. The spraying effect is a question that is often asked. This is also the key to whether the drone can be fully promoted. Some factors that affect the spraying effect are as follows: