coal sample的用法和樣例：
例句
- The determined result differences of the caking index of the same coal sample under different test conditions are discussed.
探討了不同試驗條件下同一煤樣粘結指數測定結果的差異。 - The mass and the quantity of oxygen physisorption of the coal sample were measured before and after each heating experiment.
在每一次加熱前後都測量煤樣的質量，以及進行對氧氣的物理吸附實驗。
