tpyCOCA¹²³¹⁵⁴BNC²³⁶²¹³⁺¹ 基本例句 abbr.tons per year 吨/年 TPY-30 drilling machine is a type of shallow- hole drilling machine for exploration, it is suitable for drilling in soil, sand soil and medium harden rock drilling. 主 TPY-30型钻机是一种液压浅孔物探普查钻孔机，该机主要适用于土层，沙土层和中硬岩层中的钻进。 chinazuanji