“trial pit”的概念、定义、翻译、参考文献-科学参考

单词	trial pit
释义	trial pit [`trīl ´pit] ^{MINING ENGINEERING} A shallow hole, 2 to 3 feet (60 to 90 centimeters) in diameter, put down to test shallow minerals or to establish the nature and thickness of superficial deposits and depth to bedrock.
随便看	scalariform scalar invariant scalar meson scalar multiplication scalar polynomial curvature singularity scalar potential scalar processor scalar product scalar triple product scala tympani scala vestibuli scale scaleboard scale drawing scale effect scale factor scale height scale insect scale model scalene spherical triangle scalene triangle scalenohedron scalenus scale-of-ten circuit scale-of-two circuit

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