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Invar 36 is a kind of low expansion alloy, and it is difficult to machine because of its plastic, ductility and low heat conductivity. During Grinding, the part surface is easy to burn and wound for high grinding temperature and wheel adhesion.

Invar 36是一种低膨胀合金，其塑性大、韧性高、热导率低，磨削时所产生的磨削力大，磨削温度高，工件表面易于烧伤和划伤，对砂轮的粘附较严重，属于典型的难于加工材料。

In the matching stage, the angle of feature vectors is used as the similarity measure in the high dimensional space directly. This similarity measure is invariant to the linear transformation of feature vectors. Compared with SIFT and normalized correlation, the proposed method needs no primary features such as edges, corners, gradient or shapes which are very unstable in low contrast and low NSR images.

在匹配过程中，以向量之间夹角的大小作为相似度度量，直接利用图像的灰度信息在高维向量空间中考虑图像之间的相似度，克服了在低照度、低信噪比的图像中求边缘、角点、梯度和形状等特征的困难，不受向量模大小以及向量平移的影响，即相似度的计算是线性光照不变的。

Aimed at low-SNR infrared images,the principle,invariant property and computational methods of Pseudo-Zernike moments are analyzed,and a method for low-SNR infrared target detection based on Pseudo-Zernike moments is proposed.

针对低信噪比红外目标图像，分析了伪Zernike矩的基本原理、不变性和计算方法，提出了低信噪比红外目标检测的伪Zernike矩方法，并比较了模板匹配、Hu矩、伪Zernike矩方法的目标检测效果。

In recent years, it is moreand more intensive for diesel engine to be required for low fuel consumption,heavy power , low exhaust emission, Iow noise ,and so on.

微电子技术的迅速发展代替了传统的机械和液力控制技术，它在内燃机上得到了广泛的应用。

Ge Yusheng, General Secretary with Chinese As sociation of Light Industry Machinery seriously mentioned that Baodao-B-3 low-noise, strong-suction V suction-ironing table is unique in its kind, which successfully overcame the ins ufficient suction of old ironing table with its suction wind strength up to 350 Pa, whose whole stroke of suction valve adopts stamping by machinery mould, leaving smooth suction door of good sealing and low-noise etc. My personal involvement in this quality inspection witnessed the proven quality of Baodao brand.

中国轻工机械协会秘书长，高级工程师葛余生认真地讲宝岛牌YTT-B-3型低噪音强吸风，V型吸风烫台与同行业生产的不一样，很具有特色，解决了过去老式烫台吸风不足的弊病，吸风压强最高达350Pa，吸风阀门全程采用机械模具冲制，使风门光洁畅顺及密封性好，噪音低等特点(我亲自参加了这次质量检测，宝岛品牌名副其实)，宝岛品质国内一流，与国际同步，替代进口，价格从优。

The study looked at tomato seedling development and its susceptibility to low irradiance and low temperature stress.

探索幼苗叶片花青苷对低温弱光处理的番茄幼苗的光合作用是否具有保护作用。

Several non-isolated-pentagon structures of low symmetries are found to have low energies close to the most stable isomer.

并且一些较低对称性的非IPR异构体也拥有与最低能量接近的较低能量。

Therefore, how to exchange and integrate these isomerism data with low coupling, low price and conveniently has becom...

因此，如何低耦合、低代价、方便地将这些异构数据进行交换和集成已成为当前研究的一个热点问题。

JAMA - Results are in for a serious head-to-head study of a low-glycemic load diet versus a low-fat diet.

贾马-结果是一个严重的一对一研究低血糖负荷的饮食与低脂肪的饮食习惯。

Compared with conventional process, the method has good process compatibility, process simplicity, strong controllability and wide application scope, is helpful for realizing low cost and high yield, and manufacturing high frequency low power consumption power junction field effect transistor having a better performance.

本发明与常规工艺流程有很好的工艺兼容性，工艺简单，可控性强，适用范围广，有利于实现低成本和高成品率，制造出性能更优的高频低功耗功率JFET。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。