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For a general parametric curve/surface, we usually cannot compute its exact implicit form. Even though its exact implicit form can be computed, the curve/surface implicitization involves relatively complicated computation and the degree is higher. Moreover, it may have unexpected components and self-intersections. All these unsatisfied properties limit the applications of the exact implicitization. So finding curve/surface approximate implicitization has become a practical problem. In this paper, we present an algorithm to solve the approximate implicitization of a given parametric curve by using a quadratic algebraic spline curve.

由于精确隐式化过程不一定可以实现，即使可以实现隐式曲线曲面的阶数高计算复杂，并且具有不希望的自交点和奇异分支，从而限制了隐式化的运用，所以寻求参数曲线曲面的近似隐式化问题成为很实际又重要的问题，提出利用二次代数样条曲线来实现一般平面参数曲线近似隐式化的一种算法。

This article uses the implicit function theorem and the properties of analytic functions,with less limitations for the uniqueness,continuity,continuous differentiability of the implicit functions,and gets the sufficient and necessary conditions of the existence of implicit functions by simplifying them.

从常用隐函数存在性定理出发，放宽对隐函数唯一、连续、连续可微等性质的限制，利用解析函数的性质将其展拓，得到广义隐函数存在的充分必要条件和广义隐函数的分布特征。

Results Administration of L-NAME could attenuate the activity of NOS and inhibit spermatogenic cells apoptosis in rats experimental cryptorchidism, and it could significantly inhibit weight loss of the cryptorchid.

手术建立大鼠单侧隐睾模型，实验分为隐睾组、隐睾+L-NAME组［术后腹腔注射溶于生理盐水的L-NAME 50 mg/(kg\5d)］、隐睾+生理盐水组、假手术组，7 d后采用化学比色法检测睾丸组织NOS活性，流式细胞术和原位缺口末端标记法检测生精细胞凋亡，RT-PCR和免疫组织化学法检测Bax基因表达变化。

The dormancy was classified as cryptobiosis (e.g., anhydrobiosis, cryobiosis, osmobiosis and anoxybiosis) or diapause (e.g ., encystment and resting eggs).

最新的观点将其划分为两类，即隐生和滞育。根据导致隐生的环境因子的不同，又可分为低湿隐生、低温隐生、高压隐生、低氧隐生四种形式。

The author first reported the social phenomenon and synchronizing development incryptosporidia,the dynamic process of the sporozoites or merozoites aparted from theirparent substances and developed into trophozoites,the culture of C.baileyi in chickenembryo,and the excysting process without both the trypsin and the sodium taurocholatein 37℃ water.The high levels of excystation(60%)oceured at 37℃ water showedthat temprature was very important in cryptosporidia excysting process.

在国内首次观察和描述了薄壁型隐孢子虫卵囊；首次报道隐孢子虫具有群体寄生现象和同步发育特征；首次描述了隐孢子虫的裂殖子或子孢子离开母体和发育为滋养体的动态变化过程；首次应用粪便中纯化的C.baileyi卵囊感染鸡胚成功，并用37℃水脱囊，其脱囊率高达60％，表明温度对隐孢子虫的脱囊具有重要作用，无需胰酶和牛胆酸钠的参与。

We reviewde their documents and exam all patients. The examination include refraction,strabismus ( exophoria was noted down with negtive,and esophoria with postive ),eye axial length,postive relative accommodation and negative relative accommodation.

回顾以往资料并对两组试验对象进行检查，检查项目包括屈光度、眼轴长度、远近隐斜度和40cm处加+1.00Ds时的隐斜度(外隐斜用负数记录，内隐斜用正数记录)、AC／A率及正、负相对调节等视光参数。

For the children who were moderate exophoric or intermittent exotropia, PALs could not slow down the progression of myopia.

渐进多焦点眼镜对伴内隐斜、正位眼及轻度外隐斜的儿童有控制近视进展的作用，对伴内隐斜的近视儿童尤为明显；对伴中度外隐斜或已有间歇性外斜的近视儿童，未显示近视控制作用。

The objective is to provide an objective and quantitative basis for the standardization of TCM syndrome differentiation.In this paper,we systematically explain the conceptual advances on the underlying principles and pote...

在系统阐述隐结构分析及隐结构模型诠释的原理和工具的基础上，提出了隐结构法应用于中医证候研究的意义及步骤，并以抑郁症的隐结构模型为例，示范了隐变量和隐类诠释的方法和步骤，以期为今后从病证结合角度进行类似的研究提供参考。

Joseph Stalin said makesconstant initiality of the view that any phenomenon if orphaned land, there is no association with the phenomenon of around it, it would not be able to understand it, because the nature of any given field of any phenomenon, if it is out of touch with the surrounding conditions, and they are isolated phenomenon society become meaningless things; on the contrary, any phenomenon if the same phenomenon has around, unviolable is subject to the constraints surrounding phenomenon, and that's understandable, arguably.

斯不小林说：&形而上学觉得，板滞界的任何一种不隐象，如果被簇拥不天、同边际不隐象操纵干系不天来看，那不离无法抱怨，因为板滞界的任何范畴洋的任何不隐象，如果把它看作是同边际前提操纵干系，与它们分隔的不隐象，那社会成为不十足事理的工具；反之，任何一种不隐象，如果把它看作是同边际不隐象有着不可不合割的干系，是施边际不隐象所制约的不隐象，那不离可以抱怨，可以论证了。&

Hidden frame supported glass curtain wall can be divided into implicit and semi-framed.

隐框玻璃幕墙又可分为全隐框玻璃幕墙和半隐框玻璃幕墙两种，半隐框玻璃幕墙可以是横明竖隐，也可以是竖明横隐注。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。