grab sample定時取樣、定時試樣、隨意取樣、抓毛樣品學術名詞抓樣：機械工程、地質學抓取法樣品：礦冶工程隨取樣品：礦冶工程單一樣本：土木工程隨取樣本：土木工程英文釋義a single sample or measurement taken at a specific time or over as short a period as feasible