female scientists wearing chemical protective suites and ppe collect samples of toxic water to test by mobile lab test, examining wastewater from industrial, and environment - 水樣本 個照片及圖片檔化學品, 污染, 檢查
male experts check that food goods meet international environmental test criteria by analysing chemical samples related to the products. - 水樣本 個照片及圖片檔男人, 僅男人, 實驗室
standing on riverbank, male university student meticulously transfers water from one tube to another, embodying role of water quality analyst - 水樣本 個照片及圖片檔污染
hands of experienced researcher, protected by blue gloves, hold two test tubes, with water being visibly darker in one tube - 水樣本 個照片及圖片檔
man using portable electronic device for measuring water quality in mountain river. - 水樣本 個照片及圖片檔檢查, 科學家
two technicians working for collect the water sample and visible check quality in mountain river. - 水樣本 個照片及圖片檔科學家, 分析, 室外
two technician working with portable electronic device for measuring water quality in mountain river. - 水樣本 個照片及圖片檔
a thermometer taking the air temperature as part of a study to measure the speed of the russell glacier near kangerlussuaq greenland. - 水樣本 個照片及圖片檔冰川