单面的

Summary the stud pump is that one kind of one stud type is lost the stud bush that fortune pump and stud and interior surface that its major work parts are partiality spirochaetas assume the bifilar helix face .

螺杆泵是一种单螺杆式输运泵、它的主要工作部件是偏心螺旋体的螺杆和内表面呈双线螺旋面的螺杆衬套。

The stud pump is that one kind of one stud type is lost the stud bush that fortune pump and stud and interior surface that its major work parts are partiality spirochaetas assume the bifilar helix face .

概述 螺杆泵是一种单螺杆式输运泵、它的主要工作部件是偏心螺旋体的螺杆和内表面呈双线螺旋面的螺杆衬套。

To do this, click on the topmost brown text layer in the Layers Panel, hold down Shift, and then click on the bottommost brown text layer to select all of them.

要做到这一点，请在最上面的图层面板中，举行了移位，褐色的文本层，然后在最底层棕色文字层单击以选中他们。

Stems simple from caudex, often branched above.

在上面的来自块根，通常分枝的茎单生。

The author not only presents pseudo sphere, ellipsoid ,conoid,uniported hyperboloid,elliptic biparted hyperboloid,paraboloid and hyperbolic paraboloid of the second elemental form,but also curve of the second elemental form.

不但给以了伪球面、椭圆面、劈锥曲面、单叶双曲面、双叶双曲面、椭圆抛物面及双曲抛物面的第二基本形式，而且给以了一般曲面的第二基本形式。

It also carries on four levels of single-factor laboratory experiments with three sample soils: clay, cohesionless soil and sandy soil, concerning three elements: cement mixture ratio, age, water content in order to find out the contractibility under different test conditions, and also the permeability of locking surface between cement soil and concrete.

试验选择粘土，粉砂土和粗砂土三种土质，采用室内试块试验的研究方法，选择水泥掺入比、龄期、含水量三种因素，分别进行了四种不同水平的单因素试验，研究水泥土在不同养护条件下的收缩性，通过水泥土和混凝土咬合面渗透试验来检验两者咬合面的抗渗性。

In this manner, a developable surface was designed using control planes with Bézier and B-spline basis functions.

基于将可展曲面作为平面单参数族包络面的思想，给出在Bézier和B样条基下可展曲面的参数表示形式。

It shows that some of the geometric construction algorithms that exist for curves can be also generalized to the design of developable surfaces.

基于将可展曲面作为平面单参数族包络面的思想，给出在B啨zier和B样条基下可展曲面的参数表示形式。

Make your voice heard by casting your vote in the form below by Dec. 2, 2009 (click one of the options, or write in any album of your choice). Then come back on Dec.

让你的声音，投下了2009年12月2日您在下面的表单投票（单击该选项，或写在任何您所选择的专辑一）听取。

During the Si homoepitaxial growth on a double domain Si (100)(2×1) surface, a monoatomic layer mode of RHEED intensity oscillation along [100] azimuth and a ＂monoatomic-layer-like＂ mode along [110] azimuth are observed.

对于双畴(2×1)再构表面的Si(100)外延，沿〔100〕方位观测到的RHEED强度振荡为单原子层式；而沿(110)方位观测时为&类单原子层&模式振荡。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。