ออกฤทธิ์โดยสัมผัส, ได้รับพิษโดยการสัมผัส [การแพทย์] Contact level, a delicate stage so pivoted as to tilt when two aspects of a measuring equipment occur into contact with one another; -- used in precise determinations of lengths and inside the precise graduation of instruments. [ 1913 Webster ] Clever Vocabulary: các từ liên quan https://123b-holdings68901.blogocial.com/how-click-can-save-you-time-stress-and-money-67051414