公亩 meaning in Chinese

are (等于100平方米, 或119.6平方码)

A metric unit of area equal to10 ares
十公亩面积的公制单位之一，等于十公亩
Within the 10 meter depth contour there are 69 , 600 hectares of shallow mud flat fit for sea culturing . the major cash aquatic products are of 214 species , 120 families and 21 kinds . the area of salt field is 1677 . 6 hectares
3万公顷，主要经济水产品有14类107科173种，淡水主要经济水产品有7类13科41种；且为粤东著名产盐基地，现有盐田面积167770公亩；全市有林面积20