恒定的

The direction of rotation is often constant in a species; for example, Convolvulus always rotates in an anticlockwise direction.

在特定的物种中旋转的方向是恒定的，例如旋花科植物总是逆时针方向旋转。

Results (1)The agger cells existed in 99% of the cases, the development of the agger cells in 9～16 years old children, and adult had no difference;(2) The morphology of agger cells differed widely, but its relationship to the anterior border of the middle nasal concha, bulla ethmoidalis and nasolacrimal canal was quite stable;(3) The upward pneumatization of the agger cells was not related to deviation of nasal septum, but closely related to the development of the frontal sinus;(4) The anterior nasosinusitis often influenced the agger cells and might result in hyperosteogeny.

结果 ①绝大多数病例（99%）有鼻丘气房，儿童（9～16岁）鼻丘发育与成人相比无差异性；②鼻丘形态变化很大，但与中鼻甲前端、筛泡和鼻泪管的关系是恒定的；③鼻丘向上气化程度与额窦发育关系密切，鼻中隔偏曲对其发育无明显影响；④前组鼻窦的广泛炎症易波及鼻丘，并可出现鼻丘骨质增厚。

They work on the basis that DNA mutates at a steady and calculable rate.

分子钟技术的原理是DNA按照恒定的，可计算的速率发生突变。

Results The mental development index in infancy was correlated with gender, early-education, parents＇ educational degree and father＇ profession, but not with mother＇s profession, familial income and major nurturers.

影响幼儿期智能发育的因素有性别、是否接受0-1岁早期发展指导、父母亲文化、父亲职业等，其中是否接受0-1岁早期发展指导是影响幼儿期智能发育较重要且恒定的因素，在幼儿期女童智能发育超前于男童。

Acceleration will cease eventually because lift and drag build back up since they depend on the speed of the airflow over the wing.

因此，在一个较低的攻角下，会比高攻角下更容易取得恒定的速度。

It can be seen from this article that the two methods have demonstrated the working capacity for calculation of frictional force and thermal load on surface of a hypersonic winged flight vehicle, which moves in dense atmospheric layers on a trajactory with stationary values of velocity head.

由文可见，对于在稠密大气层内，沿轨道运行头速度恒定的高超声速有翼飞行器，能够用本文所采用的两种方法计算其表面摩阻和热载荷。

Parathyroid hormone as one of the most important hormones that could regulate bone metabolism, is synthesized and secreted by the principal cell of parathyroid gland.

甲状旁腺激素是由甲状旁腺主细胞合成和分泌的一种单链多肽激素，是人体内维持血钙恒定的主要激素。

Based on magnetic circuit method, the conditions to obtain constant force-displacement characteristic are derived.

提出了一种新的矩形截面直流电磁铁结构，得出恒定的力－位移特性。

In order to decrease energy consumption and load fluctuation acting on the cutting head of roadheader, pick arrangement and kinematic parameters of cutting head are optimized based on the optimization strategy of average load of every pick and number of picks cutting simultaneously.

针对掘进机截割头载荷波动和能耗问题，基于各截齿受力均匀和同时参与截割的截齿数保持恒定的优化策略，对截齿排列参数和截割头运动参数进行了多目标优化设计。

Along its course, accessory nerve gave several branches to trapezius muscle. Conclusions: The course of accessory nerve is constant, which is helpful to protect and find out it during the related procedures.

副神经有较为恒定的标志，上述测量的副神经体表定位有助于在有关手术中可以有效地保护或快速子找副神经。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。