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- hard and brittle strata 硬脆地层
- Fine and dense structure for hard and brittle work piece to grind. 硬而且脆弱的工件加工时用细密的组织。
- It is in high hardness and brittle. 硬度高、性脆,磨粒锋利,具有一定的导热性。
- Belt grinding shows excellent characteristics in machining hard and brittle materials. 砂带磨削在硬脆材料加工中具有优良的性能。
- Cathleen was as white as Cade had been the day Scarlett called, white and hard and brittle, as if her face would shatter if she spoke. 凯瑟琳跟思嘉拜访那天的凯德一样苍白，苍白、冷峻而刚脆，仿佛一说话她的脸就会破裂似的。
- Suppose you notice that sometimes the tar in the pavement outside your house is soft and pliable, while other times it's hard and brittle. 加入你注意到了你家房子外的小路上的沥青焦油有的时候很柔软，但在有些时候又硬又脆。
- Suitable for accurate wet-cutting of hard and brittle materials such as ceramic tile enameled porcelain ,glass , marble ,granite ,etc. 适用于切割全瓷瓷砖、上釉陶瓷、玻璃、高档大理石、高档花岗石等对精度要求较高的硬脆材料。
- The ultrasonic vibration cutting processing of electroplated diamond wire saw for hard and brittle materials was researched. 利用自制的实验设备研究电镀金刚石线锯的超声纵振动切割加工脆性材料。
- The research status at home and abroad about the cutting mechanism, the cutting in plastic region of hard and brittle materials when being sawed and grinded are summarized. 对国内外有关硬脆材料锯磨去除机理及硬脆材料塑性域锯磨的研究现状进行综述,指出了该领域有待深入研究的问题。
- This hard and brittle magnet has the features of powerful magnetism,good temperature stability,good resistance to demagnetization,good corrosion resistance. 其材质特点是硬而脆，磁性较强，温度稳定性好，不易退磁，耐腐蚀性好。
- A new researched drill of machining super hard and brittle materials, which can combines ultrasonic vibrating with grinding of diamond grits, is introduced. 介绍了新研制的一种钻削超硬脆材料的钻头，阐明了该钻头的钻削机理，给出了该钻头的设计及制作过程。
- Rotary Ultrasonic Machining (RUM) is an effective machining technology for hard and brittle materials.This paper presents its principle ,application,specialities and material removel mechanism . 超声旋转是加工硬脆材料的一种有效的加工方法，本文介绍了该加工技术的基本原理、应用特点及加工过程中材料去除机理，叙述了超声旋转加工技术的发展概况。
- Diopside is rated at 5.5 on Moh's Scale of Hardness and though it is suitable for jewelry purposes, care should be taken with this stone for it is relatively soft and brittle. 透辉石是额定5.;5对卫生部的规模和硬度虽然这是适合珠宝首饰的目的，应注意与此石为是比较软脆。
- High boron iron-base alloy is a new kind of wear-resistant material,which takes high hardness and brittle eutectic borides as its wear-resistant phases. 高硼铁基合金是一种新型的耐磨材料,其特点是以组织中硬脆的共晶硼化物作为材料的耐磨相。
- Nonmetal hard and brittle materials 非金属硬脆材料
- He stuck hard and fast to his principles. 他坚定不移地坚持自己的准则。
- You can't lay down hard and fast rules. 规则不能定得太严太死。
- Work hard and you will be successful. 努力工作，你就会成功。
- He has had it hard and gets discouraged. 他处境因难，感到沮丧。
- He works hard and keeps regular hours. 他工作努力，生活很有规律。
