查询词典 molecule

It is owing to the bending and torsion vibration of methylene group contained and the configuration change of sixmember ring leading to the deactivation of excited molecule.

这是由于亚甲基的伸屈、扭转运动和六员脂环的构象变化为分子的失活提供了机会，导致荧光量子产率下降。

The total internal reflection fluorescence microscopy is one of the most promising bio optical techniques in the world, which has been used to observe single fluorescent molecule directly.

全内反射荧光显微技术是当今世界上最具前途的新型生物光学显微技术之一，可以用来实现对单个荧光分子的直接探测。

This work is mainly about the construction of a Prism-type Total Internal Reflection Fluorescence Microscopy system for the purpose of single molecule studies.

本篇论文主要是关於建立一套稜镜式全反射显微萤光显微术系统，以进行单分子研究。

Single molecule detection ; Total internal reflection fluorescence microscopy ; Review

单分子检测；全内反射荧光显微镜；评述

M. translational distribution, angular distribution, and the branching ratios for different possible product channels by measuring the angle-resolved time of flight spectra of photofragments. Information about photodissociation processes such as dissociative lifetime of parent molecule, the orientation of transition dipole moment, and the symmetry change of the highly excited states can be deduced from the translational energy distribution and angular distribution.

碎片平动能谱方法是在无碰撞条件下研究光解动力学的一种理想方法，它通过测量光致碎片在不同角度的时间飞渡谱(Time of Flight，简称TOF)，可以得到光解碎片质心系的平动能分布、角分布和不同解离通道之间的分支比等，由此可以推知母分子的解离寿命、跃迁偶极距的取向以及激发态分子的对称性变化等过渡态的动力学信息。

Photofragment translational spectroscopy is an ideal tool to investigate photodissociation dynamics under collision-free conditions through which one can obtain the total center of mass translational distribution, angular distribution, and the branching ratios for different possible product channels by measuring the angle-resolved time of flight spectra of photofragments. Information about photodissociation processes such as dissociative lifetime of parent molecule, the orientation of transition dipole moment, and the symmetry change of the highly excited states can be deduced from the translational energy distribution and angular distribution.

碎片平动能谱方法是在无碰撞条件下研究光解动力学的一种理想方法，它通过测量光致碎片在不同角度的时间飞渡谱(Time of Flight，简称TOF)，可以得到光解碎片质心系的平动能分布、角分布和不同解离通道之间的分支比等，由此可以推知母分子的解离寿命、跃迁偶极距的取向以及激发态分子的对称性变化等过渡态的动力学信息。

Density functional theory calculations have been carried on the molecular knot at the RB3LYP/6-31G levels. Based on the optimized geometry, the vibrational spectra, natural bond orbital and orbital energy level analysis for C30 carbyne trefoil knot have been calculated at the same level, and compared with the cyclo-C30 carbyne molecule.

本文用密度泛函方法[DFT/RB3LYP/6-31G]对分子结构和光谱性质进行了研究，在优化构型的基础上通过自然键轨道方法和轨道能级研究了它的共轭性、成键情况和稳定性，并与平面型C30卡宾环分子进行了比较。

CD is cyclic oligosaccharides consisting of 7 glucose units connected by α-1,4-glycoside bonds. The CD molecule has the shape of a truncated cone.

环糊精是由7个葡萄糖单元以α-(1，4)-糖苷键相连而成的低聚糖，是略呈锥形的圆环状分子。

The results of temperature field, velocity field and molecule moving field are attained, and the effect of different tuyere position on air quality indoor and energy use ratio.

给出了温度场、速度场及分子运动场的数值结果，并具体分析了风口位置不同对室内空气品质及能量利用效率的影响。

The rate of sedimentation depends on the molecular weight of the molecule and thus the ultracentrifuge and be used to separate a mixture of large molecules, such as large colloidal proteins, and estimate particle sizes.

物质沉淀率取决于分子本身的重量，所以可用超速离心机分离大分子混合物，如：大胶体蛋白，或用于检测物质颗粒大小。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。