In forming a perfect antithesis by adopting the sense of a homophone in the sentence,one of the premises was that the loaned sense was not to be in conflict with the true sense and context of the original couplet;if it occurred in the structure of a certain term or e.

In order to enhance the machining efficiency of a large symmetrical freeform surface,this paper put forward a new concept of symmetrical machining(SM),analyzed the characteristics of SM.

Selecting the materials of the cutter according to the differences of the uses and processing targets will get good technical and economical results in actual processing.

Based on the parallel operation experiments of axial-flow fans, moving law of a pair of operation points have been studied.

Making a brief review for aphasia and amusia, combing with the research of ERP and functional neuroimaging for language and music’s contrast process and synchronous process, it is found that, to a large extent, both of them exist coincidence of process mechanism; it means that they have ‘the common neural process resource’.