The new technology is especially fit for working big diameter and high precisiontube parts.
这对于加工大直径、高精度的管类件具有重要的意义。
2
Better precision X ray tube, and wider analysis scope, long lifetime up to 10 years.
激发源X射线光管精度更高，范围更宽，使用寿命长达10年以上；
3
The precision of liquid column manometer was described. The correct use method and error correction of U tube manometer and double tube differential pressure gauge were analysed.