Seal links of H-GIS are less than GIS and probability of seal system leakage is less with simple maintenance.

GIS的密封环节比GIS少，密封系统的泄漏几率小，维护更简单。

youdao

Seal links of H-GIS are less than GIS and probability of seal system leakage is less with simple maintenance.

GIS的密封环节比GIS少，密封系统的泄漏几率小，维护更简单。

youdao