底面

Of or based on a system of coordinates.

底面都是平行四面体的棱柱。

All of Giacometti's figures are characterized by a dichotomous sense of groundedness that appears to contradict their tenuously thin limbs; this is expressed by their large, heavy feet that are rooted to a base raised only slightly off the floor.

贾克梅蒂的人体作品都有一个共同的特点：形状上枝杈较多，但同时又给人一种深植地面的感觉，与他们细长的四肢看上去有些矛盾。之所以会有这种感觉，是由于底座只比底面高出少许，而人物的双脚大而厚重，就象在底座上扎了根一样。

The translation group symmetry of phononic crystal is changed by changing the size of adjacent rods.

通过改变两相邻的柱体底面边长之比来改变声子晶体的平移群对称性。

According to a semi-infinite truncated cone model, in Laplace space the approximate analytical solutions of the bottom surface of rigid circular plate and semi-infinite viscoelastic medium are obtained and the calculating model and formulae of seismic forces are presented.

根据半无限截头圆锥模型，在拉氏空间中获得刚性圆板底面与半无限弹性介质相互作用的近似分析解，提出了刚性圆板地震力计算模型及计算公式。

The atomic force microscope was used to measure the adhesional energy per area and surface force on the diaspore interface in the absence and presence of collector .

矿物晶体底面（001）层间静电能的大小决定其层面润湿性，其大小关系为：高岭石≥伊利石＞叶蜡石。

Tray craftwork takes technical wood as main material, the natural and rare bark of "cateye" lines as surface with beautiful patterns engraved by laser engraving machine at one time, and the natural Sapelli bark for bottom with waterproof varnish on both front and back side, which sets off the "cateye bark" and the beautiful pattern, solid and lifelike.

工艺托盘采用的是＂高新技术产品＂科技木为主要材料，选用仿真天然珍贵树种＂猫眼＂纹理制成的木皮做为托盘表面，美丽的图案经进口镭射雕刻机一次性雕刻成功，底面用天然沙比利木皮做成，正反两面都喷有防水亮漆，使得表面的＂猫眼＂木皮和精美的图案更加鲜艳，更加亮丽，纹理的立体感更强，栩栩如生。

A hypothetical drained cell model retrofitted from a 160kA Hall-Heroult cell was set up to calculate the current distribution in the cathode when the anode bottom and cathode top surfaces were declivous. Two half anode-cathode slice thermo-electrical models with the collector bars installed slopingly or horizontally were adopted to calculate the potential drop and electricity distribution of the cathode.

摘 要：将某厂现有的160kA Hall-Heroult铝电解槽改造成导流槽后，在阴极上表面和阳极底面呈斜坡状的条件下，计算了采用不同阴极导杆安装方式时阴极的电位和电流分布，即通过建立导流槽内部从阳极到阴极的一个半切片电热场模型，用有限元法分别对水平和平行于阴极斜坡两种不同导流槽阴极导杆的安装方式下阴极电位和表面电流密度分布进行了计算。

Also the concrete structure's service life may be threatened by the negative pressure occurred when waves se parate from the subface of the structures.

另外当波浪离开上部结构底面时产生的负压力作用对混凝土结构的耐久性也是一个很大的威胁。

The pseudopodial movement could be inhibited by calcitonin (100 μg*L－1). Lacuna formation could be found in cocultured specimens. There were fibrils on the walls of lacunae. The MGCs demonstrated positive reaction with Gomori stain. Conclusion: The results demonstrated that MGCs had the same morphological features and the bone resorption ability as the osteoclasts.

结果：倒置相差显微镜下可见多核巨细胞胞核较多（20个以上），胞浆周边不规则，有伪足样突起；胞浆内可见较多大小不等的空泡；降钙素（100 μg*L－1）可抑制多核巨细胞的伪足样运动；多核巨细胞与灭活的骨片共同培养时可见骨吸收陷窝形成，扫描电镜下可见吸收陷窝底面有原纤维；Gomori染色时可见多核巨细胞的酸性磷酸酶呈阳性。

The image forming device also includes a pressing body which is provided on the main frame and is slidable in a direction along a straight line orthogonal to a rotational center shaft of the electrostatic latent image carrier and a rotational center shaft of the developer carrier, and an operating unit which operates the pressing body to press a bottom surface of the developing unit by sliding the pressing body in a direction of the straight line and to hold the pressing body so that the developer carrier is maintained under a state making contact with the electrostatic latent image carrier.

该成像设备还包括：一个按压机构，该机构设置在该主框架上，并在按压方向上沿着这样直线的方向滑动，其中该直线垂直于静电潜象载体的旋转中心轴和显影剂载体的旋转中心轴；以及一个操作装置，该操作装置通过在直线的方向上滑动该按压主体以按压显影单元的底面，并保持该按压主体，从而该显影剂载体保持在与静电潜象载体接触的状态。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。