四复的

The lens system comprises four separated lens components, with three of them being subapertures. Two examples of apochromatic telescope are presented, both with the use of typical normal glasses, namely crown K9 and flint F5 glasses, and low-cost slightly anomalous dispersion glasses.

本文介绍了一种采用小异常色散玻璃复消色差的新型结构形式的光学系统，由四个分离的透镜组构成；给出了两个望远镜物镜设计实例，均使用价格便宜的非异常色散玻璃，校正了二级光谱、倍率色差，同时也校正了其他色差和单色像差。

In order to optimize an effective combined preservative applied to the orange juice preservation, the authors studied the synergistic effect of biological and chemical combined preservative which contained Nisin, potassium sorbate, EDTA and sodium isoascorbate in preservation of orange juice compared to preservation effect of each aforementioned additive in individual use. Results show that the growth of microorganisms can not be inhibited completely using each aforementioned additive in single use.

该文以天然生物防腐剂乳酸链球菌素、化学防腐剂山梨酸钾、乙二胺四乙酸以及食品抗氧化剂异Vc钠为原料，对通过复配后得到的各组复合型防腐剂在橙汁保鲜中的协同增效作用进行研究，并且与单一的防腐剂保鲜效果进行比较，得出一组适合在橙汁中使用的高效复合型防腐剂。

The numerical results show the difference between transient signal and steady. In the end of this chapter, the FDTD formule in the magnetic dispersion medium is presented in order to compute the scattering problem in the dispersion medium.

第四章基于FDTD方法在时域直接研究目标的瞬态散射特性，采用标准的Yee算法和改进的FDTD方法，计算了有耗介质方柱和涂复圆柱的瞬态响应，数字结果显示了瞬态信号与稳态信号的差异。

We firstly calculated the formation and dissociation of these complexes in ZnO.

在第四章中，我们研究了ZnO中的几种重要的杂质与H的复合体的性质。

Based on the foregoing Poisson-Pareto process, we extend our research from single multiplexer to network switch.

第五章是在第四章提出了Poisson-Pareto过程的基础上，将我们的分析从单个的复用器扩展到了网络交换机上。

Giambi has not played for the Yankees since May 30 because of a torn plantar fascia in his left foot. He still sleeps in a walking boot, but he felt strong in his rehabilitation games for Class A Tampa, and made four plays in the field last night.

Giambi因为左脚底的韧带撕裂伤而导致他从5月30日后就没有为洋基出赛，但他在小联盟的复健赛中感觉自己充满了力量，昨晚的比赛他也上场贡献四个打席。

To investigate the role of transmural dispersion of repolarization and cardiac restitution properties in arrhythimogeneity in LQT2, we observed the effects of d, 1-sotalol, hypokalemia and calcium channel blocker on TDR and cardiac restitution properties at different basic cycle length by using the arterially perfused rabbit left ventricular wedge preparation.

为探讨心室跨壁复极离散度和动作电位时程恢复性质的变化在LQT2室性心律失常发生中的作用，笔者采用冠状动脉灌注的兔左室肌楔形组织块制备LQT2模型。标本随机分四组：对照组；LQT2模型组（100 mol/L d，1-sotalol灌流）；模型+低钾(3 mmol/L)组和模型+低钾+维拉帕米(2 mol/L)组。

Polygenetic compound deposit is characterized by " five many".

作者于1979年开始提出多因复成矿床概念的主旨，是为了阐明从时空四维并重的角度来认识与研究成矿的重要性。

The twenty three N-acylalanines which have unsimilar structures and different stereoisomers were used for general, preliminary and second screening tests of fungicidal activities for above four fungi.

最终获得的23种具有不同结构，不同旋光异构体的化合物，再以上述四种致病菌为防治对象，进行了杀菌活性的普筛、初筛和复筛试验。

It doesn't produce self-compensation film on the friction surface and doesn't produce zero abrasion and self

论文首先以四球法，对新合成的几种润滑添加剂的单相和双相、三相复配后的

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。