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- The deformation characteristics of non free cutting (NFC) are experimentally studied with the chip cross section geometry, the deformation configuration and the cutting ratio. 通过对切屑截面几何、变形状态及切削比的实验分析，研究了非自由切削的变形特征。
- Free cutting, very small broken chips and excellent surface finish. 自由切割,碎片细小,表面处理极佳。
- The hypoeutectoid graphitized free cutting steel was proposed. 具有亚共析组织的钢种其石墨化过程一直很难，因此该钢种开发的关键是促进其石墨化过程。
- The result of secondary-level speciation were obtained by using cation-exchange resin, Amberlite XAD-2 macroreticular resin and Chelex-100 chelating resin. Four elements almost existed on free ions with little non free ions. 利用阳离子交换树脂、Amberlite XAD-2型大孔吸附树脂和Chelex-100螯合树脂的研究结果表明,四种金属元素几乎都是以游离态存在,只有极少部分为非游离态。
- In this paper, development of these three kinds of free cutting steels for machine structure purpose is described. 概述了锡易切削钢、铋易切削钢、石墨易切削钢这3类机械结构用无铅易切削钢的发展情况。
- A new environmental friendly free cutting brass containing stibium instead of lead was produced by casting and rolling. 采用熔铸、轧制的方法生产出了以锑代铅的环保型无铅易切削黄铜板材。
- The microstructure and property of the free cutting unquenched plastic die steels have been studied. 研究了易切削系非调质塑料模具钢的组织与性能。
- The diamond mesh size in a cutting tool also directly relates to the number of crystals per carat and the free cutting capability of the diamond tool. 钻石网目尺寸的刀具也直接关系到每克拉的晶体数目免费钻石切割工具的能力。
- During the smelting process of sulfur or lead series free cutting steel, atmospheric pollution is severe, and lead is harmful element to human. 摘要常用的硫系、铅系易切削钢，冶炼时空气污染严重，且铅有毒，对人体有害。
- The relationship between carbon content and properties and microstrure of free cutting non-heat-treated plasic seels was investigated in this paper. 研究了碳含量与易切削非调质塑料模具钢性能间的关系。
- Sn-free cutting steel, Bi-free cutting steel and graphite free cutting steel without harmful element to human and surroundings will be friendly development material. 锡易切削钢、铋易切削钢、石墨易切削钢由于不添加对人和环境有害的元素，是一种非常友好的开发钢种。
- R.Wenke, E.L.O.K.C.B.T.L.O.L., “Investigations on hard coated reamers in different lubricant free cutting operations”, Surface &Coatings Technology, vol.90, 1997, pp.172-177. 陈昱淇，“碳矽含量对沃斯回火无合金铁-碳-矽材料磨耗行为之研究”，2006年，义守大学材料科学与工程学系。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- Reading occupies most of my free time. 阅读占去了我大部分的闲暇时间。
- The basic principle, test device, and the regularity of cutting parameters affecting to the arc characteristics, kerf width, kerf angle, and dross free cutting speeds are dealt with. 内容涉及基本原理、实验装置及加工参数对弧柱特性、切口宽度、切口角、无渣切速的影响规律。
- The principles of elements choice of lead free cutting brass was expatiated.It was pointed out that the lead in lead-brass or bismuth in bismuth-brass is replaced by dispersive intermetallics. 根据金属材料的切削机理和铜合金的基本性质,阐述无铅易切削铜合金成分选择的基本思路,提出以弥散分布的金属间化合物代替易切削铅黄铜中的铅或无铅铋黄铜中的铋,从而实现易切削黄铜的无铅化。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- The morphology of inclusions and fracture of a tin-bearing free cutting steel were observed by means of SEM and the chemical composition of inclusions determined using EDAX analysis. 用扫描电镜观察了含锡易切削钢的夹杂物和断口的形貌,并按能谱分析了夹杂物的化学成分。
- He is declared personal non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
