معنى درابزين الدرج في القاموس

Machinery with a 360° revolving superstructure

Articles having a hardness equivalent to 9 or more on the Mohs scale

Flexible tubes, pipes and hoses, having a minimum burst pressure of 27.6 Mpa

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