Analysis shows that the in-phase superposition of the low system and the insursion of the cold air are the main factors contributing to the developing and strenghening of the typhoon "Toraji "; the inversion of the cold trough and the development of subtropical high from Japan to the Korea Peninsula, which made the st.

The operating principle of interface circuit is analyzed and discussed,and the horizontal sync-phase adjustment circuit is designed and studied in de- tail.

Amplitude and phase adjustment units are important parts in ground wave OTH-radar transmitter,implementing conversion and adjustment of HF detection signal.

This paper introduces the frequency multiplication(the MLT04 Four-Channels、Four-Quadrant Analogy Multiplier) circuits and the phase adjustment circuits in the data processor with the Photoelectrical rotary encoder.

Y→△transformation is conventionally used by CT secondary current phase adjusting of transformer differential protection while its sensitivity of single phase to earth fault is lower than that of three phase fault and interphase fault.