2.He’s pitting his wits against the computer chess game.
他正与电脑棋斗智。
3.However,the passive film on Fe-20Cr NC was a n-type semiconductor which had a higher transpassivation potential and therefore higher resistance to pitting corrosion.
而纳米晶涂层在两种溶液体成的钝化膜均为n型半导体。
4.It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.