查询词典 picometer

So to usefully track the device's vibrations, the ideal NEMS transducer must be capable of resolving extremely small displacements, in the picometer-to-femtometer( trillionth to quadrillionth of a meter) range, across very large bandwidths( extending into the microwave range).

为了要有效地追踪横杆的振动，理想的NEMS电能转换器必须能在很宽的频谱範围内测量到微微米至飞米（0-12~0-15公尺）位移。

For the Sun in its orbit around the centre of the galaxy, the speed is 220 km/s, but the acceleration only about 10 pm per second per second (a picometer, pm, is a trillionth of a metre) and the required force is 0.0000000001% of your weight.

太阳绕银河系中心公转的速度为220km/s，但加速度只有约10 pm/s/s （1 pm=10^-12 m），相应的力只有你体重的

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。