The non-porous refractory liner, - the nest block is a high strength Corundum – Spinel pre-cast and pre-fired shape.
非多孔耐火材料内衬，是一种高强度刚玉- 尖晶石预制和预焙烧的成型的。
The anterograde effective refractory period and Wenckebach block point were measured before and after ablation.
进行慢径路改良，观察手术前后房室结的前传有效不应期和文氏阻滞点的改变。
In the eastern part of the North China block, the refractory peridotite xenoliths in Cenozoic Hebi basalts (Henan Province) are regarded as the shallow relics of the cratonic mantle;
在华北地块东部，河南鹤壁新生代玄武岩中的耐熔橄榄岩捕虏体被认为是克拉通地幔的残留；
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