dynamic seal

动封 动密封 动态密封  detail>>

dynamic liquid seal

动封  detail>>

no seal

无封条  detail>>

seal

 n.  〔sing., pl.〕【动物；动物学】 1.海豹。 2.海豹毛皮(制品)。 3.海豹皮色〔灰黄深褐色〕。 4.〔Sea...  detail>>

seal in

封入  detail>>

seal is

锡尔群岛  detail>>

seal on

铅封完整  detail>>

seal-in

封入  detail>>

dynamic

 adj.  1.动力的，动力学的；力学(上)的；动(态)的；起动的。 2.有力的，有生气的；能动的；(工作)效率高的。 3.【音乐】力度；强弱法的。...  detail>>

official seal; common seal

公章  detail>>

seal steam seal stm

密封蒸汽  detail>>

dynamic brake (dynamic braking)

动力煞车，动力制轫  detail>>

a seal colony

海豹群  detail>>

abradable seal

耐磨密封  detail>>

acid seal

酸对 酸封  detail>>

acoustic seal

防声封条 声密封  detail>>

adhesive seal

粘合封口  detail>>