Why don't you come skating tonight?

'Well, why don't you ask me?' he said finally.

“嗯，那你为什么不问我呢？”他最后问道。

《柯林斯高阶英汉双解学习词典》

Why don't you come over to England in the summer?

你为何不在夏天来英格兰呢？

《牛津高阶英汉双解词典》

Why don't you have a quick kip?

你为什么不小睡一会儿呢？

《牛津高阶英汉双解词典》

Why don't we go together?

我们为什么不一起去呢？

《牛津高阶英汉双解词典》

According to the performances, the broach to machine cage pockets is designed and manufactured. The broaching hole is made by adopting multi-pull type broaches and horizontal broaching method, and the accuracy of the cages meet design requirements.

根据被加工材料的性能，设计制造了加工保持架兜孔的拉刀，用多把拉刀采用卧式拉削方式进行拉孔加工，使保持架产品精度达到设计要求。

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CAD for Combined Broach Used to Machine Automobile Connecting Rod

加工汽车连杆的组合拉刀CAD

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As the typically brittle materials, optical glass has been used in many hi-tech fields widely, such as aerospace 、 microelectronics 、 optical industry and so on. But high hardness and low fracture toughness lead to its poor machinability.

光学玻璃作为典型的脆性材料广泛地用于航空航天、微电子、光学工业等诸多高新技术领域；但其因硬度高、断裂韧性低而导致可加工性较差。

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Brittle bones; glass is brittle;` brickle 'and` brickly' are dialectal.

脆弱的骨头；玻璃是易碎的；‘brickle’和‘brickly’是方言。

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Sometimes, the life of human being is as brittle as thin glass.

有的时候人的生命如玻璃一样容易破碎。

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The increase of the strength and toughness of SiC_p/ MoSi_2 composites is mainly attributed to the refinement of MoSi_2 grains, dispersion strengthening of the SiC particles and elimination of the brittle SiO_2 glass phase.

SiC p/MoSi2复合材料强韧性的提高主要是由于晶粒细化、SiC颗粒弥散强化以及脆性SiO2玻璃相的减少和消除。

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Man was "a brittle crazy glass":

人是一块“易脆的疯狂的玻璃”：

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Since there was no other way to account for it, he came to the conclusion that glass was an extremely slow moving liquid that settled over the years, resulting in thin, brittle glass at the top that gradually thickened towards the bottom edge of the windowpane.

由于找不到其他原因对此现象加以阐释，他由此得出结论，认为玻璃是流动极其缓慢的液体，随着时间的推移逐渐趋于稳定，于是造就了后来我们所见的玻璃窗形态：上部稀薄易碎，而底部边缘则越发增厚。

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A simulation experiment using the fracturing of two-dimensional brittle glass plates is designed to study the propagation process of fracture in a brittle medium.

设计了一个二维脆性玻璃板的破裂模拟实验，以研究脆性介质的破裂传播过程。

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A Study on the Notch Brittleness of Stress Rupture in Fe-Mn-Al-Cr Austenitic Heat-Resisting Steels

Fe-Mn-Al-Cr系奥氏体热强钢持久缺口脆性的研究

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Modified epoxy acrylic UV resin with polyacid partially replacing acrylic acid, overcoming the brittleness of original resin in some degree and gives resin with fast curing speed, high gloss, high adhesion.

采用部分多元酸代替丙烯酸对环氧丙烯酸UV树脂进行改性，在一定程度上改善了原树脂的脆性，改性后的树脂具有固化速度快、光泽高、黏度高的特点。

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Hair root fragile X mental retardation protein assay for the diagnosis of fragile X syndrome" Rubber, vulcanized& Determination of low-temperature brittleness ( single test piece method)"

发根脆性X智力低下蛋白检测法诊断脆性X综合征GB/T1682-1994硫化橡胶低温脆性的测定单试样法

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" Rubber, vulcanized& Determination of low-temperature brittleness ( single test piece method)"

GB/T1682-1994硫化橡胶低温脆性的测定单试样法

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A series of analysis were made on the cracked area, including macro-and micro-analysis, chemical, hardness, microstructure test and hydrogen brittleness removing test.

对该失效件进行了断口宏观分析以及扫描电镜微观分析、化学成分分析、硬度检测、金相组织观察、并进行了氢脆试验验证。

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A chromosome brittleness test was also carried out on 6 exfoliative patients.

对6例剥脱性皮炎进行染色体脆性分析。

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The hot brittleness mechanism and structure of surface oxide coating of low-alloy steels containing 0. 3%-0. 7% of copper have been investigated by means of hot/ cold bending tests, optical microscopy, SEM and EPMA.

用冷、热弯试验及光学显微镜、扫描电子显微镜和X射线微区分析仪分析研究了含0.3%～0.7%Cu的低合金钢表面氧化层结构及热脆机理。

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