For reducing tonal noise, e.g., generated by engines and propellers, the reference microphone can be replaced by a nonacoustic reference sensor, e.g., a tachometer or an optical or inductive sensor.

Stop fiddling with your food. Either tell me what's wrong or just eat.

We investigate the southern part of the Valley from Rueisuei to Taitung (latitude 23.5°N–22.7°N), which is the part of the Valley where interseismic surface creep has already been observed at some points of the Longitudinal Valley Fault (LVF).

If a Picture is daub’d with many bright and glaring Colours, the vulgar Eye admires it as an excellent Piece […]