不被使用

In fact the bell-shaped nozzles on most rocket engines employ this technology to keep them from melting!

事实上，那些看起来像铃铛的喷嘴就是使用的这种技术以保证自己不被融化。

After that, we delete the handle to the bitmap since it will not be used anymore.

在这之后，我们删除了位图的句柄，因为它再也不会被使用。

Most people have m ore than one needle for cross stitching or e m broidery and need a way to store the needles when they aren't being used.

大多数人有一个以上的交叉缝合或刺绣，需要一种方法来存储时，它们不会被使用的针针。

Providing also a self-contained presentation of classical isoperimetric inequalities for eigenvalues and 30 open problems, this book will be useful for pure and applied mathematicians, particularly those interested in partial differential equations, the calculus of variations, differential geometry, or spectral theory.

为eigenvalues和30个开放式问题也提供古典isoperimetric 不平等的拘谨的赠送，这本书将是对纯并且被使用数学家有用的，特别是对偏微分方程，变分法，不同几何学或者光谱的理论感兴趣的那些。

The camera lucida is still available today through art-supply channels, but is not well-known or widely used.

现今，投影描绘器依然可以在绘画器材供应商那里找到，但并不出名，也不被广泛使用。

"People didn't leave the house happily," says Jason Bosch, a broker with Home Center Realty in Norco, Calif."There are often signs of that. There's used, dirty carpet. The grass is dead."

"人们不会开心地离开他们的房子"，加州NOCOR的Home Center Realty公司经纪人Jason Bosch先生说，"常有很多那样的迹象，被使用过，脏脏的地毯，草坪也死了。"

Coming to the scene they had struggled with, Cleese found that it wasn't funny; one of the earlier takes had been used.

当看到让他们废了很大劲的那个场景时， Cleese 发现一点也不搞笑：原来早期的一个镜头被使用了。

The purpose of this paper is to find the proper character of cooling water and the ways of it pass in and out the jet, which make sure that the anode of plasma ignition jet will not be ruined, to prolong the useful life of the pole, by using the numerical analyze in plasma ignition torch against heat transfer of anode and cooling-water against convection current heat transfer, and process the simulation calculation by using FLUENT soft.

本文通过对等离子体点火炬与阳极传热以及冷却水与对流湍流传热的数值分析，运用FLUENT软件进行模拟计算，找出满足使等离子点火器阳极不被烧蚀的冷却水的合理参数及冷却水进出水方式，来延长电极的使用寿命。

This feature is not recommended with delimiter character * defined.

该功能与分隔符未被定义下不推荐使用。

Among used machine learning methods, the gradient descent method is widely used to train various classifiers, such as Back-propagation neural network and linear text classifier. However, the gradient descent method is easily trapped into a local minimum and slowly converges. Thus, this study presents a gradient forecasting search method based on prediction methods to enhance the performance of the gradient descent method in order to develop a more efficient and precise machine learning method for Web mining.However, a prediction method with few sample data items and precise forecasting ability is a key issue to the gradient forecasting search method. Applying statistic-based prediction methods to implement GFSM is unsuitable because they require a large number of data items to model a prediction model. In the contrast with statistic-based prediction methods, GM(1,1) grey prediction model does not need a large number of data items to build a prediction model, and it has low computational load. However, the original GM(1,1) grey prediction model uses a mathematical hypothesis and approximation to transform a continuous differential equation into a discrete difference equation in order to model a forecasting model.

其中梯度法是一个最常被使用来实现机器学习的方法之一，然而梯度法具有学习速度慢以及容易陷入局部最佳解的缺点，因此，本研究提出一个梯度预测搜寻法则(gradient forecasting search method， GFSM)来改善传统梯度法的缺点，用来提升一些以梯度学习法则为基础的分类器在资讯探勘上的效率与正确性；而一个所需资料量少、计算复杂度低且精确的预测模型是梯度预测搜寻法能否有效进行最佳解搜寻之关键因素，传统统计为基础之预测方法的缺点是需要较大量的数据进行预测，因此计算复杂度高，灰色预测模型具有建模资料少且计算复杂度低等优点，然而灰色预测理论以连续之微分方程式为基础，并且透过一些数学上的假设与近似，将连续之微分方程式转换成离散之差分方程式来对离散型资料进行建模及预测，这样的作法不尽合理，且缺乏数学理论上的完备性，因为在转换过程中已经造成建模上的误差，且建模过程仅考虑相邻的两个资料点关系，无法正确反应数列未来的变化趋势。

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。