builtupn.组成(建立；装配；积累)adj.组成的(组合的；围建的；组装的)builtadj.有特定体格的；体型美的动词build的过去式和过去分词.built-together pump连发动机的泵松密度built-in instrument机内仪表built-up disk rotor组合轮转子built-up foundation组装基础built-in stabilizer内在稳定器built-in microscope内装显微镜built in homojunction内均质结built-in camouflage内装伪装built-in microphone机内话筒built in self testing内部自检