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This paper introduces the preparing method, the structure, the properties and applications of poly (trimethylene terephthalate) (PTT), and it compared with PET, PBT et al. engineering plastics.

本文介绍了聚对苯二甲酸丙二醇(PTT)法、能及应用,并和PET、PBT等工程塑料进行了比较。

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Osmosis-液肿瘤

Diagnosis of hemophilia A and B usually starts with lab tests including a platelet count which is usually normal, a prothrombin (PT) time, and a partial thromboplastic (PTT) time.

友病A和B的诊断通常是进行实验检测,小板计数(一正常)、凝(PT),以及部分凝活酶(PTT)。

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There is also a prolonged prothrombin (or PT) time, as well as prolonged partial thromboplastin time (or PTT), both of which reflect having lower levels of circulating coagulation factors.

(PT)和部分凝活酶(PTT)均会延长,两者都反映出液循环中低水平的凝因子。

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