Apparatus for drawing soil samples in agricultural engineering; apparatus for soil sampling in undisturbed situation
农业工程中抽取土壤样本的设备；原状土壤取样装置

1968-04-01

Soil drilling apparatus for drawing soil samples in agricultural engineering; groove borers, tube borers
农业工程中用于抽取土壤样本的土壤钻探设备；沟槽钻、管钻

1964-05-01

Soil drilling apparatur for drawing soil samples in agricultural engineering; rod, rotating borers, sampling spoon, sampling spoon for marshes, twist drills
农业工程中用于抽取土壤样本的土壤钻孔装置；棒 旋转钻孔机 取样勺 沼泽取样勺 麻花钻

1964-11-01