 |
| Russian | English |
| среднее значение яркости | average gray value (ASTM D6557 Standard: AVG – measurment of brightness units on the test steel ball, indicating the degree of rust protection. Paul_K) |
|
| Russian | English |
| среднее значение яркости | average gray value (ASTM D6557 Standard: AVG – measurment of brightness units on the test steel ball, indicating the degree of rust protection. Paul_K) |