All countries in the world have very strict checks on the import and export of cross-border logistics and air freight, and need to go through various complicated procedures, especially goods involving health and safety, and also need to go through strict
The speed per knot is 1.852 kilometers. 1 knot = 1 nautical mile/hour = 1.852 km/hour = 0.514444m/s. Vehicles on land, as well as ships on rivers, usually use kilometers (kilometers) per hour as their speed measurement unit, while the speed unit of sea sh