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In the synthetic procedure to chiral docetaxel C13 side chain, the expensive cinchona alkaloid derivatives can be recycled, which dramatically decreased the reaction cost.

在多烯紫杉醇手性C13侧链的合成过程中,对价格昂贵的金鸡纳生物碱衍生物配体进行了回收和再利用,大大降低了反应成本。

Based on the static balance among the pile and soil, the basic differential equations of the displacements of the pile and soil were deduced. Considering the compatibility condition of stress and strain , based on the vertical deformation of pile and pile-surrounding soil, the analytical formulas calculating the pile friction were drew.

本文通过建立复合地基中桩体和桩周土的基本微分方程,考虑应力协调条件,假设桩周土的位移模式,在此基础上推导出桩侧摩阻力和桩身轴力的解析式,并进一步研究相关影响因素。

Present research,problems and improvements on steel braces and dual system s of concentrically braced frames

框架-混凝土剪力墙体系,框架-支撑体系,框架-混凝土筒体等双重抗侧力体系在工程中应用非常广泛。

Methods: 60 patients with isolated anterior teeth used zinc oxide paste and iodoform gutta-percha point for lateral condensation, then the experimental group had the root canal filling pressure into FRC pile nail, the control group would no longer be dealing with, two groups had apical dye leakage test.

选60例离体前牙,采用碘仿氧化锌糊剂及牙胶尖做侧压充填,然后实验组在已充填的根管内加压插入FRC桩,对照组不再做处理,对两组做根尖染色渗漏试验。

And it was divided into four groups at randomly (n=6),The vertical compression,bending and torsion intensity in without and with reduction of cortical fragment of plate fixated contra side, without and with reduction of cortical fragment of plate fixated sidewere measured.A11 results were analyzed with statistic method.2、animal experiment :The 12 adult goats were divided into two group at randomly,wedged cortical defect with 1 cm of long and conjugate diameter was created in the middle-part of the medial femur and plate was fixed in the defect side and as the experimental side,the other side was control.after operation 4、8、12 weeks,investigation of the fracture healing by means of gross observation,X-ray examination and histology in both sides.

测试各组的垂直压缩、三点弯曲及抗扭转的刚度。2、动物实验:12只健康成年山羊,雌雄不限,体重在20~25kg之间,在同一只羊双侧股骨中段内侧制造楔形骨皮质缺损,分实验组和对照组两组进行钢板内固定并植骨,于术后4、8、12周对实验组及对照组行X线正位片检查,观察骨折愈合过程中不同时间点的影像学特点。于4、8、12周各组处死4只动物行大体标本观察,并取缺损区骨组织行组织学检查。X线检查及组织学检查结果根据LaneX线评分标准及组织学评分标准进行评分。最后采用SPSS13.0进行统计学分析。

Objective:To evaluate the modulation of motoneurons by contralateral descending activation in neonatal rat spinal cord slices.

目的:探讨对侧腹外侧索下行激活对离体脊髓运动神经元活动的突触调制作用。

Results :3 cases Simple ovarian cysts , 3 cases postoperatively diagnosed as endometriotic cyst , 7 cases teratoma , 7 cases crinoid cysts , 7 eases corpus luteum cysts , 1 case brenner tumor , 1 case mucinous cystadenoma and 1 case ovarian mutinous syst, 8 parovarian.

结果:术后诊断单纯性卵巢囊肿3例,卵巢巧克力囊肿3例,其中2例为双侧卵巢巧克力囊肿,卵巢成熟畸胎瘤7例,卵巢黄体囊肿7例,卵巢冠囊肿7例,卵巢膜纤维瘤,卵巢粘液性囊昧瘤及卵巢粘液性囊肿各1例,输卵管系膜囊肿8例。

In more formal variants of the curtsey, the woman bends the knees outward, often sweeping one foot behind her.

更加正式的一种屈膝礼中,女性屈膝时双膝需略微向外打开,并将一只脚后撤。有时还要双手拎起体侧的裙摆。

Based on a second order damped oscillation differential equation for a missile and upon a detailed analysis of the balance sideslip angle under commands from several different ways of control, the paper proposes some significant empirical criteria for the static stability design of anti tank missiles.

根据弹体摆动运动的简化数学模型,通过对几种控制方式不同的反坦克导弹在指令作用下的平衡侧滑角等数据进行分析研究,得出了反坦克导弹静稳定度设计的一个经验性法

Specific examples include the use of acoustical laminate on the windshield and front side glass; Quiet Steel laminate on the front-of-dash body area; expanded baffles in the roof pillars to block noise paths; extensive use of melt-on sound deadener throughout the entire lower body structure; and sound-absorbing material throughout LaCrosse's engine, passenger and cargo compartments.

具体例子包括在挡风玻璃和前侧玻璃隔音板的使用;安静的钢铁板的前短跑机构地区屋顶支柱阻止噪音路径;扩展挡板,广泛使用在整个熔体声音deadener -整个下体结构,吸音整个君越的发动机,客运,货运车厢材料。

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推荐网络例句

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷

Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.

Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。