PPTC Principle of Operation PPTC circuit-protection devices are formed from a composite of semicrystalline polymer and conductive particles.

PPTC的动作原理PPTC线路保护设备的动作媒介是由半晶质的化合物和电导介质组成。

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Proportionate punishment to Crimes (PPTC) is an important principle in the justice, which means to balance the crime and punishment to reach the aim of punishment and education.

罪刑相当原则是司法实践中的一项重要原则，其意义在于使罪、责、刑三者相适应，以达到处罚和教育的双重目的。

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Ronnie Hassard, from the Post-Primary Transfer Consortium (PPTC) of schools which use the GL assessment test, said he knew of no private donor.

BBC: John O'Dowd calls for exam donor to be named

The Post Primary Transfer Consortium (PPTC) provides the GL assessment tests mainly for Catholic grammars, along with some integrated colleges and a few non-denominational schools.

BBC: John O'Dowd calls for exam donor to be named

Ronnie Hassard, the head-teacher at Ballymena Academy, which uses the GL assessment exam, said that the money for the tests came from individual grammar schools and was processed through the PPTC and paid to GL Assessment.

BBC: John O'Dowd calls for exam donor to be named