Passing NULL as ps is not multi-thread safe.
ps として NULL を渡すことはマルチスレッドでは安全でない。 - JM
Amplitude values P of a vibration generated from a screw thread rolling device are subtotaled relative to each prescribed divided section, and a waveform abnormality is detected from the ratio between the subtotal value Ps and a total value Pt of the amplitude values P in one-time screw thread rolling process. ねじ山転造装置から発生する振動の振幅値Pを所定分割区間毎に小計し、これら小計値Psと1回のねじ山転造工程中の振幅値Pの合計値Ptとの比から波形異常を検出する。 - 特許庁
Copyright (c) 2001 Robert Kiesling. Copyright (c) 2002, 2003 David Merrill. The contents of this document are licensed under the GNU Free Documentation License. Copyright (C) 1999 JM Project All rights reserved.