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- Periodic change imposed on a controlled variable or a function by a controller. 通过控制器控制某一变量或函数进行周期性变化。
- The periodic change of the hydraulic pressure in a oil tank under periodic flow drive is discussed. 在进、出流体的周期性激励条件下，讨论了动力油箱内液动压力的周期性。
- Automated systems must use individually assigned accounts that require a periodic change of password. 自动化系统必须使用需要定期更换口令的个人担保账户。
- In fact, it is common practice to express the pulsar slowdown as the period divided by the period change per year. 事实上，人们通常用周期与周期年变率之比来表示脉冲星的减速。
- Infection may occur with long-term indwelling stents, but this can be prevented by use of antibiotics and periodic change of the stents. 长期放置输尿管内置管，可能发生覆盖物或移位，因此定期追踪检查所放置之输尿管内置管是必须的。
- It is verified that the periodic change of cross-sectional area and moment of inertia enforces the excitation of the pulsatile ... 证实了截面积和截面惯距的周期变化加强了脉动流的激励、容易使乳胶管发生位移振荡,这与实验结果在定性上是吻合的。
- There is an effect of lunisolar precession on the measures of the period and period change rate of pulsars. 摘要脉冲星周期和周期变率的测量中存在着日月岁差效应。
- The results indicate that periodic change of Be'nard patterns after certain time will stop automatically during pregnant period of strong earthquake. 计算结果表明,在强地震的孕育期,贝纳德花样的周期变化在一定时间后将自动停止。
- The histomorphology of the secondary follicle of adult cashmere goat showed a periodic change within a year, and it is different in anagen, catagen and telogen. 成年绒山羊次级毛囊形态在一年中呈周期性变化，在兴盛期、退行期和休止期的形态各不相同。
- Considering the effects of the outside factor and the periodic change of the predictand, the multivariate mixed threshold regression model with periodic components is developed. 摘要在综合考虑预测对象的周期变化和前期外部因子的共同作用后，给出带有周期分量的多元混合门限回归模型。
- The number of apoptotic cells in dermal layer showed the periodic changes. 真皮层的凋亡细胞主要分布于毛囊的各层结构中。
- Then, in a relative blink, this equilibrium is punctuated by a rapid burst of roiling change with many newcomers and eclipsing of the old.For a short period change is rampant. 在相对暂短的一瞬，因许多新老物种的更迭爆发的搅局打破了这种平衡，因为，短暂的变化是无法控制的。
- Abstract： The impaired endothelial function is the early period change in the artherosclerosis,which associates with cardiovascular disease and cerebrovascular disease. 摘要： 内皮功能障碍是动脉粥样硬化的最早期改变，与心脑血管疾病的发生、发展密切相关。
- Through changing the interaction time, the degree of entanglement of the atom-cavity field hasa periodic change. 随着时间的演化，原子与光场组成体系的纠缠度呈现出周期性变化规律。
- Also did a lot of surveys on the periodically change of plankton as well as zoobenthos. 并曾参与滇池的浮游生物、底栖动物物的周期性变化调查。
- WIPO and EPO fees subject to periodic change due to fluctuations in exchange rate. Refer to the Official Gazette of the United States Patent and Trademark Office for current amounts. 由于汇率的波动,世界知识产权组织和欧洲专利局费用易受周期性变化,对当前价格,可参见美国专利与商标局官方公报。
- The tests concentrate on the characteristics of the start-up, the abrupt change of heat load, the periodic change of heat load, anti-gravity capability and the operation in different orientations. 主要考察了系统的启动特性、功率突变测试、反重力性能、周期性工作特性以及不同姿态下运行性能等。
- Be in eachMenstruationIn cycle, as the periodic change of ovarian endocrine hormone, mammary gland organizes the change of the hyperplasia that also producing go round and round and instauration. 在每一个月经周期中，随着卵巢内分泌激素的周期性变化，乳腺组织也发生着周而复始的增生与复旧的变化。
- These tracts have relevant locations in curves of climatic periodic changes and sequence boundary is at the lowest point of base-level changes. 这些体系域在气候周期变化的曲线上有相应的位置，层序界面则位于基准面变化的最低点。
- Due to surface abrasion and Sideswipe can affect the image quality of output, users need to periodically change the photoptic. 由于表面磨损和擦痕会影响图像的输出质量，用户需要定期跟换感光器。
