n.
conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
同义词：tubing
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
同义词：vacuum tubethermionic vacuum tubethermionic tubeelectron tubethermionic valve
a hollow cylindrical shape
同义词：pipe
(anatomy) any hollow cylindrical body structure
同义词：tube-shaped structure
an electric railway operating below the surface of the ground (usually in a city)
"in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
同义词：metroundergroundsubway systemsubway
Heat Transfer and Pressure Drop of Liquids in Tubes
Solid-Phase Radioimmunoassay in Antibody-Coated Tubes
Misplaced endotracheal tubes by paramedics in an urban emergency medical services system
Pitot pressure measurement in high enthalpy expansion tubes
I tube, you tube, everybody tubes: analyzing the world's largest user generated content video system
Fertilizing capacity of spermatozoa deposited into the fallopian tubes.
Articles on the optical characteristics of turbid tubes, especially colloidal metal solutions
Myogenic and morphogenetic defects in the heart tubes of murine embryos lacking the homeo box gene Nkx2-5
ELISA III. Quantitation of specific antibodies by enzyme linked anti-immunoglobulin in antigen coated tubes
Reconstituted rattail collagen used as substrate for tissue cultures on coverslips in Maximow slides and roller tubes
