英语释义

• of or relating to or shaped like a quadrilateral

片语

tetragonal trapezohedronThe tetragonal trapezohedron or deltohedron is the second in an infinite series of face-uniform polyhedra which are dual to the antiprism It has eight faces which are congruent kite

tetragonal tetrad四边形四分体

tetragonal zone正方带

tetragonal sphenoid正方楔

tetragonal trisoctahedron[晶体]

tetragonal tristetrahedron[晶体]

dimetric四角形的，四边形的

tetragonal parahemihedron正方五半面体

quadrangular四边形的；四角形的

tetragonal traphezohedron正方偏方面体

tetragonal scalenohedron正方偏三角面体

英汉例句

• under the high temperature and high pressure, the hexagonal graphite crystals can change into the tetragonal diamond crystals.

  在高温高压下，六方晶格的石墨转变为立方晶格的金刚石。

• it is shown that the alloys are composed ofthe tetragonal phase, b-rich phase and r-rich phase with fcc structure.

  结果表明：合金由四方相、富b 相和富r相组成，富r相具有面心立方结构。

• nanometer tetragonal polycrystal zirconia powder was prepared by the milling method in the super-alkaline medium containing organic addition.

  采用引入有机添加剂的低温超强堿法制备出纳米四方多晶氧化锆粉体。

• we also study the relation between the dielectric constant and lattice distortion of the pt tetragonal and cubic phase region.

  我们还研究了pt四方相区和立方相区介电常数与晶格畸变的关系。

• the influence of atmosphere condition on solidification procedure of nanometer tetragonal polycrystals zirconia (ytzp) slurry in the aqueousgeltapecasting process was investigated.

  对纳米ytzp（氧化钇稳定）坯片在新型水基凝胶流延成型工艺中，气氛条件对浆料固化过程的影响进行了研究。

• on the basis of the analyses, it is suggested that softening of a phonon τm2 at bz boundary m point is associated with the tetragonal to monoclinic phase transition in zro2.

  高对称点的振动模的对称性，在此基础上提出了bz边界m点声子的软化应与四方相到单斜相的相度有关。

• titanium nitride was synthesized by ammonia reduction and nitridation under flowing ammonia atmosphere while the content and tetragonal phase structure of zirconia was unchanged.

  采用氨气还原氮化法，在流动的氨气氛下原位反应生成氮化钛，同时保持四方相氧化锆含量和结构不变。

• the results indicate that the amount of tetragonal phase of microwave sintering sample is enhanced, even though the average grain size is greatly larger than critical grain size.

  结果表明：尽管微波烧结的样品平均晶粒尺寸比临界晶粒尺寸大很多，但其四方相的含量却比常规烧结的样品多；

• the results of xrd and sem show that the main crystal phase is the non-full-filled tetragonal tungsten bronze structure.

  sem结构分析可知，主晶相为非填满型钨青铜结构四方晶相。

• but the tetragonal phase in the surface region transforms easily to monoclinic phase when the samples are exposed to air.

  尽管惰性气氛和还原气氛下焙烧样品有利于四方相的稳定，但样品暴露于空气中后，表面四方相较易转变为单斜相。

• the present work was to determine the optimum sintering system and properties of the nanometer tetragonal polycrystalline zirconia green body by the aqueous gel tape casting process.

  采用水基凝胶流延工艺制备四方多晶氧化锆薄膜，确定合理的烧成制度，并考察薄膜的显微结构与烧结性能。

• the results indicate that the coating is mainly composed of tetragonal and cubic phase and a small amount of monoclinic zirconia.

  结果表明，涂层主要以四方相和立方相构成，并含有少量的单斜相。

• all kinds of pwo crystals showed the body-centered tetragonal structure in the raman spectra.

  拉曼光谱证实晶体的结构为体心四方结构。

• the microstructure and phases present in hydroxyapatite(ha) reinforced by tetragonal zirconia polycrystal (tzp) were investigated by using transmission electron microscopy(tem).

  用透射电子显微镜对四方氧化锆多晶（tzp）增韧羟基磷灰石（ha）复合材料的微观相结构进行了观察与分析。

• the nanometer tetragonal polycrystal zirconia powder was prepared by the super alkaline method at low temperature.

  利用低温超强堿法制备出了纳米四方多晶氧化锆粉体。

• the q difference between the two temperature ranges may relate to different oxygen diffusion mechanisms in tetragonal and orthorhombic structures. a qualitative explanation is given.

  两温区的差异可能与氧在四方和正交两种结构中扩散机制不同有关。

• examples are given for the hybrid orbitals of tetragonal plane, pentagonal bipyramid and d_4 symmetry using the present method.

  最后造出了平面正方形、五角双锥和d_4对称等构型的杂化键函，作为本法应用的例。

• the major phase constituent obviously transforms from cubic paraelectric phase to tetragonal ferroelectric phase after sintering, in which the ferroelectric domains exist.

  烧结前后陶瓷相结构明显改变，由原来的立方顺电相为主转变为四方铁电相为主，并存在铁电畴亚结构；

• in the first place, a formula is proved for indicating a magnetic induction strength inside a long straight helix tube carrying current, with the tubes cross section in tetragonal n regular polygon.

  首先证明了正n边形截面长直螺线管内部磁感应强度的公式，进而证明了长直螺线管内部磁感应强度与横截面的形状无关。

• it is found that the increase of oxygen vacancy content can increase the instability of the metastable tetragonal phase and accelerate the transformation to monoclinic zirconia.

  结果表明：氧空位的存在与变化不仅影响着氧化锆相结构的稳定性，而且影响着氧化锆的低温相变过程。

• these disadvantages cannot be overcome by addition of tetragonal zirconia resulting in phase transition toughening, because of the low elastic module of the ceramic artificial bone materials.

  由于生物陶瓷材料的弹性模量较小，很难采用添加氧化锆引起的相变增韧来解决上述缺点。

• when the sample is exposed to air, the elimination of these vacancies by the incorporation of oxygen facilitates the transformation from the tetragonal to the monoclinic phase.

  当暴露于空气中时，表面氧空位能够捕获空气中的氧，有利于表面四方相转变为单斜相。

• in recent years there has been tremendous surge of interests in the development and demonstration of crystals with the structure of tetragonal tungsten bronze (ttb).

  近几十年来，人们对研究钨青铜结构的材料产生了浓厚兴趣并取得了很大进展。

• in this paper, the approximation calculation method based on calculation model of earthwork formula of tetragonal prism is described.

  介绍了以四角棱柱体土方公式为计算模型的试算法确定大型场地平整最优设计标高近似解的方法。

• the results show that the content of tetragonal phase is increasing in bnbt ceramics by direct reaction sintering method but still exhibiting a single phase of perovskite structure.

  结果表明，直接反应烧结法不影响bnbt陶瓷的钙钛矿相结构，但可使準同型相界处组成的四方相含量增加；

• it is possible that oxygen vacancies formed in the surface region in the absence of oxygen can prevent the transformation from the tetragonal to the monoclinic phase.

  这可能是由于在缺氧条件下样品表面形成了一种具有氧空位的扭曲结构，这种结构可以阻止四方相到单斜相的转变。