| 释义 |
touch-down 英'tʌtʃd'aʊn美'tʌtʃd'aʊn COCA²⁵⁴³³⁷⁺⁶BNC¹⁴⁴⁶⁶⁴⁺³
基本英英例句例句
n.触下¹⁰⁰
名词 touchdown:
a score in American football; being in possession of the ball across the opponents' goal linea landing as the wheels touch the landing field; especially of airplanes
动词 touch down:
come or bring a plane to a landing
形容词100%
用作名词Touch the lower front teeth lightly with the tip of the tongue.舌尖轻触下齿。 The positive control cell line DNA was mixed in different proportions with the DNA extracted from reactive lymphoid tissue to test the sensitivity of the touch-down PCR.
阳性细胞系 DNA模板与反应增生性淋巴组织 DNA按不同比例混合后扩增，检测降落式 PCR的灵敏度。 cnki |