Charged upconversion material CaS:Eu,Sm is synthesized by Low-temperature Combustion Synthesis(LCS) method,and the upconversion luminescence mechanism of CaS:Eu,Sm is studied.
采用低温燃烧合成(LCS)法制备了存储型上转换发光材料CaS∶Eu,Sm,并对其上转换发光机理进行了研究。
Clinical research on rotary grating as a visual stimulus in magnetic resonance image of visual cortical function;
视觉皮层功能检测中旋转光栅作为刺激方式的临床研究
Fourier transform spectrometer (FTS) modulated by means of rotary grating is developed in this paper.
提出了一种基于圆盘旋转光栅调制的傅里叶变换光谱仪 (FTS) ,光栅同时实现了分束和外差调制的功能。
In the paper the principle of optical rotation due to the transfer of spin angular momentum from light to particles was discussed by analyzing the interaction between the beam of light and birefringent crystal particles, and then an optical tweezers was formed on nanometer optical tweezers system with a linearly polarized light beam (He-Ne laser 633 nm, 10 mW).
从理论上分析了偏振光束与双折射晶体粒子的相互作用过程,讨论了由于光束自旋角动量向晶体粒子的传递所导致的光致旋转效应的原理,并在纳米光镊装置上利用线偏振He Ne激光器(633 nm,10 mW)形成了光镊光阱,利用1/4波片来改变光镊光束的偏振状态,在不同的椭圆偏振状态下实现了直径约为几微米的CaCO3 晶体微粒的捕获和光致转动。
In the paper the principle of optical rotation due to the transfer of spin angular momentum from light to particles was discussed by analyzing the interaction between the beam of light and birefringent crystal particles.
从理论上分析了偏振光束与双折射晶体粒子的相互作用过程,讨论了由于光束自旋角动量向晶体粒子的传递所导致的光致旋转效应的原理。
The optical rotation caused by the orbital angular momentum transferring form laser beam to particle was elaborated.
并介绍了暗中空激光束轨道角动量传递给微粒所引起的微粒光致旋转效应,分析了激光束轨道角动量所引起的光致旋转机理。
A fiber spinning technique is introduced,the sinusoidal-rate spinning can effectively decrease the birefringence and increase the mode-coupling of the fiber.
介绍了光纤旋转技术,采用正弦旋转技术可有效降低光纤的双折射并增加模式耦合。
A forward spin on a ball resulting from such a stroke.
上旋上部击球形成的向前向上旋转
shape by rotating on a lathe.
通过在车床上旋转成形。
Thus a wheel revolves on its axle.
于是,轮子在轴上旋转。
The earth revolves on its axis.
地球在本身轴上旋转 [自转] 。
Beyond this, the camera viewpoint can be rotated in place or revolved around a focal point, also in three axes.
此外，摄像机视点可以在适当位置旋转，或者围绕某个焦点旋转，也可以在3条轴上旋转。
Position the pointer over a round handle and drag to rotate.
将指针放至旋转控点上，拖动即可旋转
Place a pivot pin into the pivot point.
把大头针扎在旋转点上。
a chair that swivels on its base.
底座上有旋转轴的椅子。
To revolve or cause to revolve.
旋转旋转或引起旋转
an assembly of rotating airfoils; horizontal rotors on a helicopter or compressor rotors of a jet engine.
旋转螺旋桨的集合；直升飞机上是水平旋转物，喷气式飞机上是压缩旋转物。
To strike the upper part of(a ball), giving it forward spin.
上旋击球击打（球的）上半部分，使其向前旋转
Picture yourself on a merry-go-round that is spinning dangerously fast.
想像你处在转得极快的旋转木马上。
a watch that is wound by turning a knob at the stem.
通过旋转主干上的小把手转动的表。
Forward rotation imparted to a ball by a stroke, as in tennis.
上旋击球后产生的球向前旋转，例如在网球中
Mechanics Fundamentals of Spinning Ball And The Methods Of Controlling It Through Quick Attack;
乒乓球旋转的力学原理及快攻克制上旋的方法
a mechanism for revolving the turntable
旋转台 [转盘] 的旋转装置
In addition to forward and backward rotation, center of rotation and rotation angle in certain procedures can be set up.
除向前和向后旋转以外，旋转中心点和旋转角度在某种程序上可设置。
I was a little lightheaded when I got off the merry-go-sound.
从旋转木马上下来时，我有些头晕目眩。