Mechanical seal: this type is especially suitable for multi-stage slurry pump in series and without leakage.
机械密封：该形式的密封特别适用于多级串联渣浆泵的密封，完全无泄漏。
2
On the basis of summing up these deficiencies, the Type JR ammonia converter internals of multistage adiabatic indirect heat exchange mode have been developed.
在总结这些不足的基础上，开发了JR型多段绝热—间接换热式氨合成塔内件。
3
Omphacitite, a new type of rock found in Myanmar jadeitite area, had experienced multi-stage jadeitizations.