查询词典 surface area

The draw ratio is the direct relationship between the draw punch and the blank edge—the greater the distance between the draw punch and the blank edge, the greater the resistance to flow, primarily because of the additional surface area of sheet metal clamped between the die face and the blank holder.

拉伸率直接体现在拉伸冲头和展开平板边缘之间的关系---拉伸冲头和展开平板边缘之间的距离越大，限制流动的阻力越大，主要是因为在压边圈和模具表面间有额外金属板表面被夹紧。试着用不同尺寸和外形的展开平板进行实验。

And precipitation rate of vanadium was higher than 98.5%. Five vanadium catalysts were made withγ-Al_2O_3 and the mesoporous molecular sieve MCM-41 as carrier, and were made by dipping method, intermingle process and functionalizing method respectively. The characterization of their pore size, crystal structure, specific surface area and V_2O_5 load of catalysts were studied by XRD, the adsorption /desorption of N_2 technique, Raman spectroscopy and XRF. The activities of the catalysts estimated by the synthesis of DPC with DMC and phenol.

钒催化剂的制备与表征及活性评价：是分别以γ-Al_2O_3和介孔分子筛为载体，采用浸渍法，掺杂法及官能化法制备了5种钒催化剂；分别对其进行了XRD分析、N_2吸附-脱附分析、红外光谱分析和荧光分析，对其孔径、晶型结构、比表面积和V_2O_5负载量进行了表征；以碳酸二甲酯和苯酚的酯交换合成碳酸二苯酯的典型反应为依据，对钒催化剂进行了活性评价。

The apparent conflicting results in the values obtained for the specific surface area by the methylene blue and nitrogen adsorption methods can be explained by the molecular cross-sectional areas of the adsorbates .

价值的明显的不一致的结果为次甲基的特定表面区域获得蓝色和氮吸附方法能是根据分子代表性区域解释 adsorbates 。

Current density is the current,measured in amperes,normalized to the surface area of the metal.

电流密度是潮流，测量用安培，正常化到金属的表面。

The use of pinewood template was beneficial to the formation of the smaller crystalline size and higher specific surface area. These biomorphic MgO materials exhibit a strong basicity, and can be used as effective basic catalysts or supports.

松木模板的使用有助于降低形成MgO样品的晶粒直径并明显提高了其比表面积，与此同时，这些具有生物形态的MgO样品仍保持了较高的碱强度，可望用作优良的碱催化剂或催化剂载体。

The results show that both the surface area and the pore volume of the activated carbons increase considerably after acid treatment.

考察了不同酸处理方式的活性炭的性质变化及其对甲烷催化裂解反应性能的影响。

Compared to the CV, the Q's cowlings are larger and more aggressively styled, as lower street speeds require more surface area and a more refined shaping in order to deliver the increased stability.

相对于简历的Q的整流罩较大，更积极风格，速度较低街道需要更多的表面积和一个优雅的塑造，以提供更多的稳定。

In this paper, we tested moisture adsorption capability of desiccants that were made from corn hull in different humidity and different temperature;we tested reversible adsorption of these desiccants too. The change of appearance of sample grain was validated by SEM and the augment of surface area was validated by mensuration.

在本研究中，对用上述方法得到的玉米渣皮干燥剂的吸水性能进行了测试，测试了干燥剂在不同相对湿度下的吸水率，干燥剂吸水率对温度的稳定性以及干燥剂的逆吸附性质，并通过扫描电镜测试和比表面积的测定验证了在处理后产物颗粒外观的变化和比表面积的增大。

The pressure on this large surface area makes it difficult to push the diaphragms down.

这样大面积上的压力使得向下推动横膈膜是很困难的。

The diaphragms have a surface area of about one square inch.

这样大面积上的压力使得向下推动横膈膜是很困难的。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。