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1.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.

1.本文介绍了二甲酸丙二醇酯(PTT)的制法、结构、性能及应用,并和PET、PBT塑料进行了比较。

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DSV, DSW, DT, DTA, DTC, DTCS, DTD, DTE, dtex, DTFA,

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3G, 401(K), a,

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Osmosis-血瘤

1.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.

血友病A和B的诊断通常是进行实验检测，包括血小板计数（一正常）、凝血酶（PT），以及部分凝血活酶（PTT）。

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Osmosis-血瘤

2.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.

凝血酶（PT）和部分凝血活酶（PTT）均会延长，两者都反映出血循环中低水平的凝血因子。

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dual-beam, dual-drum, dualin, dual-in-line, dualism, dualist, dualistic, duality, dualization, dualize,

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