回射的

The dielectric constant-voltage curves and polarization hysteresis loops of BST thin films with different thicknesses were investigated.

采用射频磁控溅射法制备了Ba.6Sr0.4TiO3薄膜，研究了不同膜厚的BST薄膜的介电偏压特性曲线和电滞回线。

The amount of these gases is so high that it has already surpassed the earths load limit, thickly enveloping the surface of the earth and making the heat projected by the sun unable to be released normally back into outer space, causing global warming and the greenhouse effect.

这些气体数量太多了，远超过地球所能负荷，把地球表面厚厚的包围起来，让太阳射入的热量无法正常舒放回太空，做成全求暖化及产生温室效应。

Fig. 4 Measurement data abo ut echo signal f rom hard target and reference when t he hard target is still , in po sitive , negative rotation c

图 4 是为了矫正参考信号与回波信号入射到法 790 光学学报 28 卷图 4 配合目标静止，正转和反转时回波信号与参考信号的测量数据

Luneberg lens is a spherical lens which its permittivity varies with normalized radial coordinates. It is fabricated by using different homogeneous dielectric centrically layered media. The lens can focus a parallel beam of rays from any direction exactly at a point on the surface. If it is made by adding a reflecting surface "metallic cap", it is called Luneberg lens reflector. It can reflect incident wave into plane wave in incoming direction. It is usually applied in antenna, radar reflector,satellite-based, and mobile-communucation.

龙伯球透镜为一种介电系数与半径成一固定比例的球形透镜，大部分是由数层不同介电系数介电质组合而成，而其主要特性能够把入射波聚焦到球表面一点，假使在透镜表面处镀上一圆锥角金属层即为龙伯球透镜反射器，能把入射波依平面波的型态反射回原入射端，通常用於天线、雷达、卫星通讯、军事等方面。

According to the simulated results, it was found that the incident light was not fully absorbed in the solar cell due to a thinner base layer. The un-absorbed incident light could be further reflected by a AuGe/Au mirror layer and absorbed again by the base layer. Thus the disadvantage of the GaAs thin-film cell with a thinner base layer could be solved by the additional reflection from the AuGe/Au mirror with a high reflectivity within 800~1000 nm wavelength. Moreover, the external quantum efficiency in the long wavelength region and short current density were also increased.

从模拟结果中得知，薄膜型结构之太阳电池可以经由AuGe/Au之金属反射层，再次将未被基极层完全吸收之入射光反射回太阳电池，使得薄膜型结构在长波段的外部量子效率获得提升，这结果显示薄膜型结构太阳电池可利用AuGe/Au之金属反射层在长波段的高反射率，改善使用较薄基极层时，无法将入射光完全吸收的缺点。

Arterial elastance and entricular end-systolic elastance were similarly increased in hypertensive controls and HFnlEF patients compared with healthy controls.

而高血压对照组和射血分数正常的心衰患者组血管弹性回缩率和收缩末期心室弹性回缩率都有所增加。

We characterized left ventricular volume, effective arterial elastance, left ventricular end-systolic elastance, and leftcommunity.

我们应用非侵入性检查手段在社区正常射血分数心力衰竭患者以及对照组中检查具有特征性的左心室容积，有效的动脉弹性回缩率，左心室收缩末期弹性回缩率和左心室舒张期弹性回缩率以及舒张功能等指标）。

The theoretic results show that retroreflective intensity increases gradually with accretion of refractive index when refractive index is less than two, but decreases when refractive index is great than two.

研究结果表明，折射率增大，折射率小于2时，回向反射性能逐渐增强，相反，在折射率大于2时，回向反射性能减弱；反射层面积的大小会影响入射光线的完整回向反射过程；最后定义了有效回向反射角度，并给出了玻璃微珠在激光照射下的二维回向反射光照度分布。

First, second and third position sensor controllers control the focus servo to focus the He--Ne laser beam on the glass substrate in response to the pit width of the glass substrate by sensing the laser beam for focusing reflectedupon the glass substrate.

此聚焦系统利用第一、第二、第三光点位置敏感器去控制氦一氖雷射，使其能够在玻璃基板上产生正确的凹坑宽度，而第一、第二、第三光点位置敏感器即藉著聚焦在玻璃基板上反射而回的氦一氖雷射作为聚焦控制。

To achieve the circuit capacity of maximal power transmission and least return loss, impedance matching networks are generally inserted in the input and output ports,compnter simulation solves the problem of how to settle the impedance matching network composition and component parameters in high efficiency.

射频电路设计中为了达到最大功率传输、减少回波损耗等电路性能，一般在输入和输出端加入阻抗匹配网络来加以改善，计算机仿真高效地解决了确定阻抗匹配网络结构及各元件参数的问题，通过ADS仿真确定了射频电路中匹配网络的元件最佳参数。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。