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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。

The primary conclusions of the present work are as following first, the charges of membrane sarface effect the rate of protein adsorption, but do not effect the amount of protein ultimately adsorbed second, the nonspecific adsorption of avidin can be detached by adding a suitable amount of bivalent alkaline-earth metal ions; third, the binding of avidin to membrane bound model receptor is astricted remarkable by the latelal steric hindrence.

实验结果表明，膜表面电荷对非特异性吸附的速率有很大的影响，而对最终的蛋白吸附量影响不大；非特异性的吸附可以通过二阶阳离子的脱附而去除；受体蛋白质与配体间的特异性结合受到侧向空间位阻效应的制约。

If the metabolic acidosis is present to a greater degree than the respiratory alkalosis, the serum pH will be acidemic.

如果代谢性酸中毒的程度比呼吸性碱中毒的程度高，那么血液PH值呈酸性

If the metabolic acidosis is present to a lesser degree than the respiratory alkalosis, the serum pH will be alkademic.

如果代谢性酸中毒的程度比呼吸性碱中毒的程度低，那么血液pH值呈碱性。

It should be noted that, at present there is no publicly available information that conclusively confirms this allegation.

应该被注意到的是，目前没有公开可得到的消息最终确认这一断言。

Second, most of the content of the assigned chorus piece were chosen to meet to the elementary students' musical abilities. The form was referred to as AB; two parts songs were usually selected; the meter signature was referred to as quarter note gets one beat and beats can be grouped in twos or fours, it remained stablely in the whole tune; the tempo of assigned chorus piece almostly based on "Moderato" and "Allegretto"; the tonality are combined with the major and minor scales and also present as the pentatonic scales, the minor scale were rarely used.

二 、九十二至九十六学年度国小合唱指定曲的内容，大部分与国小音乐能力指标相符：乐曲曲式明确，以二段式居多；编制以同声二部为主；拍号以单拍子的二拍、四拍为主，少有拍号变化；速度以中板、稍快板为主；调性不完全偏向大小调乐曲，仍兼顾调式乐曲，转调变化的不多，小调乐曲较少出现。

For the purposes of the present Treaty the Allied Powers shall be the States at war with Japan, or any State which previously formed a part of the territory of a State named in Article 23, provided that in each case the State concerned has signed and ratified the Treaty.

本条约所谓之联盟国，谓与日本进行战争之国家，或依据第 23 条所列举先前为该国一部分领土的国家，而此国家已经签署并批准本条约者。

In this paper we present a method we use to train context-independent phone models.On the basis of trained context-independent phone models,the training of allophone models and the output distributions generalizing of allophone models using binary decision trees can be accomplished.

在本文中，给出一种用于训练与发音语境无关音素模型的方法，然后利用这种音素模型完成对异音模型的训练、以及对异音模型的输出分布的二值决策树聚类。

She is our present, she allows us to be.

她是我们的现在，因为有了她才有了我们的今天。

At present and in the foreseeable, the alloy steel shall still be one of the most important materials for social and economic development.

董瀚在目前和可预见的未来，合金钢仍然是社会和经济发展所需要的重要材料。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。