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To reach the maximum load-carrying capacity, together with axial guidance in the very limited headroom available, SKF designed a cageless polymer track-runner ball bearing with two full-complement, asymmetric sets of stainless steel balls .

为了达到最大承载能力,以及轴向的指导非常有限的空间可用, SKF的设计了一个cageless聚合物跟踪亚军球轴承有两个完整的补充,不对称套不锈钢球。

Asymmetric epoxidation is the most attractive section in catalytical olefin-epoxidation with Schiffbase-transition metal complexes.

不对称环氧化是过渡金属Schiffbase配合物催化烯烃环氧化的核心。

In a similar way, using N,N\'-dibenzyl tartamide as auxiliary,-(2-methyl)allyl-2-chloro-phenyl-methyl azide, a vital intermediate of Repaglinide, can be prepared via asymmetric allylation of o-chlorobenzaldehyde in

产物经氧化和碘加成内酯化反应得到阿伐他汀中间体(3R,5S)-3-羟基-5-碘甲基戊内酯(10);将N-苄基酒石酸二酰胺用于邻氯苯甲醛的不对称烯丙基化反应以较高光学收率得-甲基烯丙基-2-氯苯基-甲基醇

The first asymmetric total synthesis of coumarinolignoids Daphneticin and it's enantiomer was accomplished starting from 7-hydroxycoumarin and 3, 4, 5-trimethoxybenzaldehyde, in which Sharpless asymmetric dihydroxy reaction was used to construct chiral center, and Mitsunobu reaction was used to obtain desired configuration.

并以7-羟基香豆素和3,4,5-三甲氧基苯甲醛为起始原料,用Sharpless不对称双羟化反应构筑手性中心,用Mitsunobu偶联反应作为关键步骤,合成了手性的香豆素木脂素Daphneticin及其异构体。

A series of dissymmetric Gemini surfactants with the structure ofC_(12H_(25)CH_(3_(2)N~CH_(2_(4)N~CH_(3_(2)C_mH_(2m+1),denoted as C_(12)-4-C_m(m is 14,16,18),have been synthesized with N,N-dimethylalkylamine and 1,4-dibromobutane as the initial reagents.

以N,N-二甲基脂肪胺和1,4-二溴丁烷为原料,合成了一系列具有不同疏水链的不对称Gemini表面活性剂C12H25(CH3)2N+(CH2)4N+(CH3)2CmH2m+1(C12-4-Cm,m=12,14,16,18),并通过1H NMR、MS和元素分析等方法鉴定其结构。

Progress in dissymmetric Gemini surfactants;2. A series of dissymmetric Gemini surfactants with the structure ofC_(12H_(25)CH_(3_(2)N~CH_(2_(4)N~CH_(3_(2)C_mH_(2m+1),denoted as C_(12)-4-C_m(m is 14,16,18),have been synthesized with N,N-dimethylalkylamine and 1,4-dibromobutane as the initial reagents.

以N,N-二甲基脂肪胺和1,4-二溴丁烷为原料,合成了一系列具有不同疏水链的不对称Gemini表面活性剂C12H25(CH3)2N+(CH2)4N+(CH3)2CmH2m+1(C12-4-Cm,m=12,14,16,18),并通过1H NMR、MS和元素分析等方法鉴定其结构。

Therefore, all the measures to prevent false account of the companies should change the conditions of dissymmetrical information.

所以,意在防止财务会计造假欺诈的一切手段,都应从改变这种信息不对称着手,进行制度创新。

The dragging and slipping technique for loading large structure with discontinuous and dissymmetrical slide shoes on board is presented in detail.

本文较详细地介绍了带有间断不对称式滑靴的大型结构物拖拉滑移装船技术。

By utilizing the character of dissymmetrical fractional fourier transform and combine the algorithm advantage of space domain and frequency domain,it presents a blind image watermarking algorithm.

结合空间域和变换域算法特点,利用不对称分数傅立叶变换的特性,提出了一种图象盲水印算法。

In conclusion, some particular problems in design of hull lines such as dissymmetrical hulls and damaged hulls, can be settled by transverse function method. Moreover, cooperating the method with existing ones will lead to better use.

经研究认为可以使用横向函数法解决型线设计中的某些特殊问题,如不对称船型和破损船型,将其与现有方法配合使用可以更好地进行型线设计。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。