free drainage 中文意思是什麼
free drainage
解釋
天然排水-
After twenty-four hours free drainage, there was little difference in moisture content.
24小時不排水，濕度則幾乎沒什麼不同。 -
Pressure test of segmental pigging : cleanup sundries, free rust, drainage and exhaust in pipe
分段清管掃線試壓：清除管線雜物、浮銹、排水、排氣。 -
As the intensity of the life quality and self - protection consciousness, people emphasize on the vegetable quality. the waste drainage resulted from the development of the city and county industry, and the input of pesticide and fertilizer and farming plastic make the vegetable more poisonous, so the research of the pollution - free vegetable industry plan is very important for the resident " health and the environment protection and the agricultural sustainable development
隨著生活質量的提高和自我保護意識的加強，人們對蔬菜的要求從數量型向質量型轉變，而城鄉工業的發展所導致的工業廢料的大量排放和農藥、化肥、農膜的大量使用，使蔬菜產品內的有害物質含量增加，質量下降。 -
Keep the floor, ceiling and walls clean and make sure the drainage is free from blockage
保持地面、天花板及墻壁清潔，確保排水渠去水暢順
分享友人