螺旋

It is analyzed by means of computer simulation that the contact-track shape and related factors, the influence of installing angle error and interpolation error to machining precision, and some important conclusion is drawn, all of which sets a foundation to improve the precision of helical surface machining.

论文以计算机仿真为手段，详细分析了截面包络法加工螺旋面时工件与刀具上的接触迹形状及影响因素；分析了安装误差及插补误差对工件加工精度的影响，并得出相关结论，为提高螺旋面的加工精度奠定了基础。

Acted by taper-face component of centrifugal force together with scroll conveyor,the cake moves interruptedly toward the bi end of the screen-bowl and is discharged out of the screen-bowl,and then out of the machine through a discharging tank.

电机带动转鼓及同心安装的输料螺旋，以一定的差速同向高速旋转，物料由进料管连续引入，均匀分布到转鼓底段滤网壁上，在离心力作用下，液相物穿过滤网和转鼓内形成滤渣，滤渣在离心力的锥面分力和输料螺旋的共同作用下，连续不断地向转鼓大端移动排出转鼓，经卸料槽排出机外。

ABSTRACT This paper demonstrated that supplementing valine, isoleucine and leucine in synthetic media had different effects on biosynthesis of multi-components of biotechspiramycin.

在合成培养基中分别添加缬氨酸、异亮氨酸与亮氨酸考察其对必特螺旋霉素生物合成的影响，证明Val、Ile及Leu对必特螺旋霉素多组分的合成有着不同的调节作用。

Hecl localizes to kinetochore in cell mitosis, and it is the critical protein for M phase progression.

Hecl定位于动粒，是纺锤体检验点调控的关键蛋白之一，它通过螺旋-螺旋结构域与其他动粒蛋白相互作用调节姐妹染色体的精确分离。

Using papain to hydrolyze the legumin and vicilin respectively showed that it could obtain higher DH from legumin than from vicilin, and the emulsifying activity of legumin hydrolysates was also increased more than vicilin hydrolysates. It was easier to hydrolyze the β-sheet fractions than α-helical fractions of broad bean legumin by papain, but to vicilin the β-sheet fractions was difficult to be hydrolyzed.

发现Papain对11S的水解程度大于7S，11S水解物的乳化活性也高于7S水解物；对水解物的圆二色性分析表明：蚕豆11S球蛋白的β-折叠结构易于被木瓜蛋白酶作用，而7S球蛋白的α-螺旋结构易于被木瓜蛋白酶作用；蛋白质分子中的α-螺旋结构对乳状液的形成和稳定起着重要作用。

To calculate nonlinear transport of pulsed beams in the six dimensional phase space of solenoid lens accurately, a beam dynamics program has been designed using Visual Fortran 6.5 to calculate the beam optical system consisting of drift spaces and solenoid lenses.

为计算强流脉冲束在螺旋管透镜6维相空间中的非线性传输，用Visual Fortran 6.5语言设计了一个计算程序，计算由漂浮空间、螺旋管透镜等元件组成的束流光学系统。

The induced supramolecular chirality was found to be dependent on the absolute configuration of lateral residues, that is, the polymers with-configurational oxazolinyl chromophores tended to form chiral aggregates with levorotatory handedness, while polymers obtained from the-monomer offered dextrogyrate one upon the addition of Cu salt. A model, in which side groups would arrange in a helix fashion, is employed for describing the unusual chirality.

由此提出了侧基在Zn／Cu协同配位作用下形成螺旋状排列的模型，即侧基螺旋模型。N-噁唑啉苯基马来酰亚胺与甲基丙烯酸甲酯共聚得到了耐热性能好(热分解温度大于296℃)的光学活性聚合物~(25D=-7.8°(来源：Af4BC论文网www.abclunwen.com)～-36.6°。

Based on the characteristics of structure and loading of the cylinder compress coil spring, the 3D finite element analyzing model of the cylinder compress coil spring in utility is established, and the finite analysis under the static and dynamic loading and life prediction are completed.

在充分考虑圆柱压缩螺旋弹簧的受力及结构特点的基础上，建立了比较符合实际的三维有限元计算模型，并对压缩螺旋弹簧进行了动静态有限元分析，获得了弹簧的刚度，进行了静强度校核、疲劳寿命估算和模态分析。

The correctness lays a theoretical foundation on further study of the processing technology of logarithmic spiral bevel gear, and thus, the new-style bevel gear can be machined conveniently and quickly.

证明了对数螺旋锥齿轮啮合原理的正确性，为进一步研究对数螺旋锥齿轮的加工工艺提供了理论基础，进而可以实现这种新型锥齿轮的方便快捷的加工。

The detective rate, the diagnose accordance rate, detection rate located coincident rate and absorbent gland metabasis rate were compared.

结果 B超、气钡双对比造影、结肠镜、螺旋CT扫描对病灶的发现率分别为64.5%、92.6%、94.1%、88.9%，诊断符合率分别为50.6%、83.6%、89.6%、80.2%，B超与另三种检查比较，病灶发现率、肠癌诊断符合率有显著性差异；肿瘤部位检查符合率四种检查无差异；B超和螺旋CT的淋巴结转移检出率有显著差异。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失