 ከተተገበረ በኋላ በተከታታይ ለ 200 ቀናት ያለማቋረጥ በ 250 warm በከፍተኛ ሙቀት ከተቀመጠ ጥንካሬው አይቀንስም ብቻ ሳይሆን ክብደቱም አይቀነስም ።
After practical application, such as continuous placement for 200 days at a high temperature of 250 ° C, not only the strength will not become lower, but also the weight is not reduced; 2 ...