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These mainly involve the periodic change of ribosome den- sity,the dedifferentiation and redifferentiation of both plastid and mitochondrion during the process of meiosis.

在这个过程中，小抱子母细胞经减数分裂产生大致相同的4个减数抱子，并逐渐发育成雄配子体。

That means the reemergence of sunspots, and with them periodic electromagnetic assaults on global navigation, communications, and power supplies--as well as brilliant auroras in the polar regions.

这意味着重新出现的黑子，并与他们定期电磁攻击全球导航，通信和电力供应-以及灿烂的极光在极地地区。

He recommends a system consisting of four steps: evaluation, communication, conviction, and periodic reevaluation.

他建议系统，包括四个步骤：评估，通讯，信念，并定期重新评估。

In addition, broad-linewidth reflection bandstop filter with one-layer grating structure is designed by use of optimization technology for diffractive optical elements and rigorous grating diffractive theory. Finally, rigorous theory is used to analyze photonic crystals for their subwavelength periodic structures.

根据二维光子晶体的结构特点，提出光栅层模型，使二维结构退化为一维结构，从而大大简化了计算过程，提高了计算速度，并编制了计算程序，详细讨论了几类二维光子晶体的禁带特征。

Only focused on long-term medication, to the neglect of the periodic review of blood pressure in some hypertensive patients continue to adhere to the attention of the medication, but because of the trouble, or because of frequent travel, or because of job strain did not insist on a regular basis to measure blood pressure, so the only dose of medication in accordance with the original.

只注重长期服药，忽视了对血压的定期复查有些高血压患者注意了坚持不断地服药，但由于怕麻烦、或因为经常出差，或因为工作紧张就没有坚持定期地测量血压，这样一来就只能按照原先的剂量服药。

Random access or channel acquisition and a number of approaches have been proposed to overcome it including: independent coding of each frame (all Intra-frame or I-frame coding), periodic I-frames to periodically reinitialize the prediction loop e.g.

帧内编码可以减小差错造成的影响，它符合高比特率的需求，在许多特定领域得到应用。

It is recommended that periodic inspection of the series 919 be done to check for any discharge from the relief valve.

建议对系列919进行定期检查，并检验从安全阀出来的任何排放。你知道它的英文吗？

In this paper, the relationship between the linear complexity and the 2-adic complexity is investigated based on the Chinese Remainder Theorem and some other related theories in the number theory, and the existence of N-periodic sequences that simultaneously achieve the maximum 2-adic complexity and a great k-error 2-adic complexity is proved.

文中借助数论中的中国剩余定理等相关理论研究了二元序列的2-adic复杂度与线性复杂度的关系，证明了具有最大2-adic复杂度以及较大k错2-adic复杂度的N周期序列的存在性，给出了具有这种性质的周期序列的数目的下界。

No longer will the plaque of 601-1, 601-2,... accrue, necessitating periodic renumbering as the city grows.

不再长很多601之1、601之2…了，导致必须屡次重编，如孩童成长，裤子又太小了。

Accrue, necessitating periodic renumbering as the city grows.

不再长很多601之1、601之2…了，导致必须屡次重编，如孩童成长，裤子又太小了。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。