معنى معامل ص في القاموس

With working part of steel

Of other glass having a linear coefficient of expansion not exceeding 5 x 10 6 per Kelvin within a temperature range of 0 °C to 300 °C

Of other glass having a linear coefficient of expansion not exceeding 5 x 10 6 per Kelvin within a temperature range of 0 °C to 300 °C

Of glass having a linear coefficient of expansion not exceeding 5 x 10 6 per Kelvin within a temperature range of 0 °C to 300 °C

Other instruments and apparatus, specially designed for telecommunications (for example, cross talk meters, gain measuring instruments, distortion factor meters, psophometers)