A study by University College London ( UCL) revealed in 2011 that reindeer can see light with wavelengths as short as 320 nanometres ( nm), considerably below the human threshold of 400 nm. 伦敦大学学院在2011年的一项研究中发现驯鹿眼睛能感知到波长最短为320纳米的电磁波,这大大小于人类所能感知到的最短波长400纳米。
A Galerkin ′ s method based numerical procedure is used to design photonic crystal fibers with zero dispersion wavelength at800 nm. 用多极方法数值研究构成六重对称全内反射型光子晶体光纤各种结构参数对基模零色散点的调节。
Install exhaust heat shield, tighten bolts to 11 Nm. 安装排气隔热罩,拧紧螺栓到11Nm。
She wrung the colthes and put them on the line. Install exhaust heat shield, tighten bolts to 11 Nm. 她把衣服拧干,晾到绳子上去。安装排气隔热罩,拧紧螺栓到11Nm。
The benefits extended beyond our classroom to our customers-a New Mexico state government agency, a local non-profit mini-conglomerate, and one of the school districts in the city of Las Vegas, NM. TDD的好处直接从教室扩散到了我们的用户&新墨西哥州政府办事处、本地一个小型非营利机构和拉斯维加斯城里的一个校区。
Their maximum wavelength was 206 nm. 紫外最大吸收波长均为206nm。
The capability to do quantitative measurement was demonstrated by recording the atmospheric oxygen absorption near 760 nm. 通过对大气中氧气在760nm处的吸收谱线的绝对强度测量,验证了该方法的定量测量能力。
Results The mean particle diameter of microemulsion was ( 44 ± 9) nm. 采用体外细胞毒性和体内全身急性毒性试验方法,评价去甲斑蝥素微乳的抗肿瘤活性及其生物安全性。结果微乳平均粒径为(44±9)nm。
Aim: To synthesize pH and temperature-sensitive nano-hydrogels with diameter less than 100 nm. 目的:制备具有pH及温度双重敏感性的纳米水凝胶,并使其粒径控制在100nm以下。
The variation in temperature has little effects on the Nm. 体系温度的变化对Nm的影响极小。
The determination wavelengths are selected as 270 and 292 nm. 选择测定波长为270和292nm。
These results show that the range of particle size of TiO2 is from 20 to 30 nm. 所制样品的组成与微观结构用X射线粉末衍射(XRD)和透射电子显微镜(TEM)表征,结果表明TiO2样品的粒径范围在20~30nm之间。
The analysis of XRD indicated that the film had the anatase structure with crystal size 10~ 20 nm. XRD分析表明组成薄膜的TiO2为锐钛型结构,一次粒径为10~20nm;