硬度

XZM Ultrafine mill is a machine for producing fineness and ultra-powder. It is mainly used for grinding the materials whose hardness is middle and low, moisture below 6%, and Moths hardness should be blow 9 grade and non-explosion and non-flammability, such as: calcite, chalk, limestone, dolomite, kaolin, bentonite, steatite, mica, magnesite, illite, pyrophillite, vermiculite, meerschaum, attapulgite, diatomite, barite, gypsum, alunite, graphite, fluorite, phosphate ore, potassium ore pumice, etc.

XZM 中速微粉磨是一种细粉及超细粉的加工设备，它主要适用于中、低硬度物料的研磨粉碎，如高岭土、石灰石、方解石、滑石、大理石、重晶石、石膏、白垩、白云石、膨润土、云母、菱镁矿、伊利石、叶腊石、蛭石、海泡石、凹凸棒石、累托石、硅藻土、石墨、明矾石、萤石、磷矿石、钾矿石、浮石等湿度小于6％，莫氏硬度在9级以下非易燃易爆的非金属物料。

In general it is much better to choose a steel which is designed to run at a lower hardness.

如果想让刀有55到57的硬度，就应该选择一种被设计来在55-57硬度工作的钢。

The alternate stacking sequence of conducting and insulating layers blocks in t-BC3 crystal constructs a sandwichlike lattice at an atomic level; which will bring some potential applications expected for novel electronic devices.

设计了一种类金刚石结构导电的BC3超硬材料，预测t-BC3晶体的硬度为79.0 GPa，高于立方氮化硼的硬度；t-BC3晶体是一种具有原子级导体-绝缘体交叠的三明治结构的晶体；可望在新型电子学器件上获得应用

GPa exceeding that of cubic BN. The alternate stacking sequence of conducting and insulating layers blocks in t-BC〓 crystal constructs a sandwichlike lattice at an atomic level, which will bring some potential applications expected for novel electronic devices.

设计了一种类金刚石结构导电的BC〓超硬材料，预测t-BC〓晶体的硬度为79.0GPa，高于立方氮化硼的硬度。t-BC〓晶体是一种具有原子级导体-绝缘体交叠的三明治结构的晶体，可望在新型电子学器件上获得应用。

When water is less than the total hardness, they always basicity, called negative hardness.

当水的总硬度小于总碱度时，它们之差，称为负硬度。

Fluoride can increase the hardness of the teeth; that calcium fluoride in the enamel of the higher proportion of teeth, the greater the hardness.

答：（1）氟可以增加牙齿的硬度，这在牙齿珐琅质的比例较高氟化钙，硬度越大。

While Chrysocolla by itself is too soft for jewelry, when it appears as an inclusion in Quartz it is hard enough to polish as cabochons.

一方面硅孔雀石作为珠宝显得硬度不够，但另方面，当她以石英形式形成内含物时，她的硬度足够能将她打磨成一颗圆形宝石。

The heterosis of grain hardness of interspecific hybrid between common wheat and spelt wheat or club wheat were usually negative except that of hybrid between common wheat variety Nongda 3226 and spelt wheat or club wheat.

普通小麦与斯卑尔脱小麦的种间杂种、普通小麦与密穗小麦的种间杂种的籽粒硬度均表现负优势，但农大3226所配的组合的籽粒硬度多为正优势。

The results show that the brush-plating coating is even and compact from section plane with good toughness and adhesion. The microhardness of the coating is 230.6HV0.5 which is 3 times of cast aluminium substrate. The wear resistance of the coating is 3 times of cast aluminium substrate. But the friction coefficient of the coating is 0.70 which is more high than that of the substrate, which is favorable for the fixed conjugate between the axis sheath and the axis seat of the gear-box.

结果表明，镀层厚度分布均匀、致密，镀层与基体界面清晰，未出现氧化物夹层，镀层的韧性和结合强度均较好；测得碱性铜及铸铝基体的显微硬度分别为230.6、74.2HV0.5；碱性铜的镀制使基体表面显微硬度及耐磨性均提高了2倍多，磨损状况明显改善。

To distinctly find out the relationship between the rigidity of tablet and the ultrasonic speed,laser is emitted to the tablet and then we measure the speed of reflected surface acoustic wave and analyse the experimental data,finally get the tablet rigidity-wave speed curve.

为了清楚地了解片剂的硬度与超声波速度之间的关系，利用激光照射到片剂上，通过测定出反射的声表面波速度，且对实验数据进行分析，从而得出片剂的硬度与声表面波速度之间的关系曲线。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。