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Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.

2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下，起亲核加成反应，反应中间体5在室温用酸性丙酮水解，得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物，产率56%、通过制备薄层层析分得这四个立体异构体，它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似，推定了它们的绝对构型。

The gold-bearing veins are superimposed repeatedly and let the mineralization more enrichment.

含金热液脉体的形态产状受构造破碎带和裂隙带控制，经过多期次叠加，往往造成矿化的进一步富集。

These employ superimposed subspace/graviton force beams which focuses interference patterns on a remote object.

这项结果会在一个有意义的空间中产生一个应力，然后将应力加在目标上。

Finally, through two lines superimposed experiments screening direction different points finish experiments, half of the tone color Points configuration with Rose Cod extent of the relationship as a series of pilot experiments proved moiré and moirés produced have different patterns in terms of technique, visual.

最后，通过两组网线叠加实验，网角方向不同的网点叠加实验，半色调网点排列的位相与玫瑰斑可视程度的关系实验等一系列实验，论证了龟纹的产生和龟纹在不同叠加角度下，可视程度的不同，证实了通过一定的加网度，可最大限度地避免龟纹产生。

The bundles are superimposed in several planes and interlace with one another in three planes: longitudinal , vertical and horizontal

纤维束则以各种不同的方向，从三个平面互相交织，有纵走的，垂直的及平行的。

The important features of superimposed basins in China are interfracture emplacement and intermountain emplacement.

缝间就位和山间就位是我国叠合盆地的重要特点，反映了盆地经历了多期次的伸展裂解、俯冲消减、碰撞闭合以及后碰撞期的伸展挤压旋回。

The Ordos basin is a large Mesozoic intracontinental basin superimposed on the Paleozoic North China craton which contains abundant oil and gas resource.

鄂尔多斯为一个我国陆上第二大沉积盆地，是大型克拉通叠合盆地，油气资源丰富。

Taking Kotlial method as an example,this paper discusses the applicability of an inverse computation method for the calculation of stage superimposed type turbine performance.

以柯特略尔法为例，对在级叠加式涡轮特性计算时使用逆算法的适用性进行了讨论。

Because the traditional methods of measuring the energy spectrum adopt the single-channel and multiple-channels which results in needing certain distinguish time and cannot solve the problem of superimposed effect of near pluses, a new method adopting the inverse filter to measure energy spectrum is proposed.

由于传统测量能谱的方法是采用单道、多道的方法，其有一定的分辨时间，并且无法克服相近脉冲的迭加效应，提出了采用逆滤波器法测量能谱的方法。

The two pieces of light the fine line patterns phase superimposed, you can generate a new set of patterns; these patterns and mathematics, physics, engineering measurement, vision psychology and isohypse and mapping are subtle.

不兵两片透光的精稠图案相叠分，可以爆发一组陈的图案；这种图案与数学、物理、工程衡量、触觉情绪及等高线测绘等都有奇奥的干系。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。