This fungus can just be detected by the unaided eye.这种真菌只用肉眼就能检查出.Gross crystalline imperfections like twinning are apparent to the unaided eye.粗的晶体不完整性,如孪生体可用肉眼看出.That comet is invisible to the unaided eye.那颗彗星只用肉眼是看不到的...
...coal mines.煤矿All that digging had left a network of abandoned mines and tunnels.东挖西掘后留下了一片废弃的矿坑。They went over nationwide in search of uranium mines.他们为了探寻铀矿走遍了全国。The UN pledged to help supervise the clearance of mine...
对于四波混频的研究主要是采用简并四波混频和非简并四波混频方法.The main method in searching four - wave mixing adopts DFWM and NDFWM.描述: 惠普安捷伦5364A是一种用于微波混频器检测器.Description: The HP Agilent 5364 A is a used Microwave Mixer Detector.用途: 用于高频放大, 调频 、 射频、混...