PTL=Photographic Technology Laboratory 摄影技术实验所[美]
Ptabbr.[化]元素铂的符号（=platinum）
pterygopalatine groove of pterygoid plate翼状板翼腭沟
pterygoarthromyodysplasia congenita Rossi[医] 先天性翼突关节肌发育不良
Pteromonas golenkiniana var. subquadrtan.戈利翼膜藻近方形变种
Pterocarya tonkinensis - Tonkin Wingnut.最南端 ()； 印度支那.
PTCH Positive Temperature Coefficient Heater[法] 对人诉讼
Pt resistance temperature measurement circuit铂电阻测温电路
PTC Positive Temperature Coefficient Thermistor正温度系数热敏电阻
PTH-like adenylate cyclase-stimulating protein甲状旁腺激素样腺苷酸环化酶刺激蛋白
Pterolocera amplicornis nuclear polyhedrosis virus澳洲牧场毛虫核型多角体病毒
Ptycholomoides aeriferana nuclear polyhedrosis virus落叶松卷叶蛾核型多角体病毒
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