这些犁片有助于铅膏的混合搅拌。
迪尔越考虑这种情况，就越相信用高度抛光的钢犁片代替传统的铸铁犁片就能解决这个问题。
The more Deere pondered the situation, the more convinced he became that a highly polished steel plow blade-instead of the conventional cast-iron model-could solve the problem.
单铧犁片，牛舌形犁：只有一个犁片的、大的，可分离式的犁铧，主要用来敲碎和清除厚土。
A large, detachable plowshare with a single blade, used chiefly for breaking or clearing heavy soil.
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