Why are the toilets of the train in line

Feel the taste of nature: (.)

After all, only one person in the toilet is uncomfortable In-line type is the whole car does not dare to open the window, especially in summer.

If you've ever gone to the toilet on the train, you're sure to feel the caresses from the cool breeze, and although some people will lose their for a moment, you don't have to worry about something bad suddenly appearing, because this is due to the in-line design of the squatting toilets on the train. Because of this unique design, when you travel a thousand miles by train, the toilet is also pouring out of the way, and it is determined that no dirt will be left inside the train. >>>More

There is basically no toilet on the official line of the ballastless track, and the in-line train runs on it, and all the bullet trains are on it.

The sewage equipment on the aircraft consists of a bedpan, a sewage tank, a filter, an electric pump, a sewage canister, an inflatable pipe, and an exhaust pipe. After the defecation is defecated, the electric pump works, and the water in the sewage tank passes through the filter, the electric pump reaches the bedpan and washes the feces down. After the feces enter the sewage tank, the water can be recycled again after chemical sterilization, deodorization, dyeing and separation. >>>More