corrosion penetration造句怎么写

2、Generally, a corrosion penetration rate of 1 mpy or less is considered acceptable for long-term compatibility. The tests were conducted for 270days at temperatures ranging from -78 c to71 c and pressures ranging from 2 x 10^-7 to 2.5 x 10^-6 psi.

1、During static exposure of aluminum, stainless steel, Inconel, Monel, nickel, titanium, steel, copper, beryllium copper, aluminum bronze, maraging steel, and tungsten, no metal exhibited corrosion penetration rates greater than 0.43 mils per year (mpy).