维护保养

Since its discovery, vitamin A has been shown to be pivotal in several bodily functions: formation of "visual purple" which allows us to see partially in low light; maintenance of healthy vision and proper eye function; repair and maintenance of epithelial tissues, especially those of the skin and mucous membranes; maintenance of the endocrine system, especially the thyroid gland; proper utilization of dietary proteins; and stimulation of the thymus gland, a major part of the immune system.

由于其发现，维生素A已被证明可在几个举足轻重的身体机能：形成"视觉紫色"让我们看到部分在光线较暗的；维护健康的理想和正确的眼睛功能；修理和保养上皮组织，尤其是那些对皮肤和粘膜膜；保养内分泌系统，特别是甲状腺；适当利用膳食蛋白质类；和刺激胸腺，一个主要部分免疫系统。

The fifth chapter has studied the ways to deal with the different kind historic furniture in its conservation and restoration, mainly discussed its deteriorated factors, common flaws, corresponding restorable methods, the technological procedures of its restoration, the key technology for the excavated furniture, the traditional technology used in restoration, the reproduction of antique furniture and its maintenance and protection.

第五章探讨了明清古旧家具修复和保养方式及常见的工艺流程，主要从损坏的因素、常见的缺陷及相应的修复方式、修复的工艺流程、出土文物家具的修复和保护的关键处理技术、修复中的传统工艺、文物家具复制及古旧家具维护和保养等多层面展开讨论。

This paper expounds the popularity and importance of the application of color sorters in rice mills, puts forward the subject-how to bring the advantages of color sorters into further play, and focuses on the three points i.

阐述了目前色选机在大米加工企业中运用的普遍性和重要性，提出了如何进一步发挥色选机优越性能这一主题，并重点从色选机的操作使用、维护保养、工艺布置三方面展开论述。

Qualification Requirement: Professional school and above Over 2 years technician experience as painting process(included paint-mixing skill and daily machine maintenance skills) in plastic painting field.

高中或以上学历两年以上塑料喷涂行业相关工作经验（包括调漆和设备的日常维护保养技术）。

Regular maintenance can be performed with the valve body in line

常规的维护保养可以在保持阀门在线的情况下进行。

Our solid tyre is especial in small rolling resistance,effectual to economize on fuel,not need to safeguard and maintain in the course of using,longe-lived,wear-resisting,bear the thorn to pitch,flexble to turn to,the vehicle openates steadily.lt overcomes the shortcomings such as pneumatic tyre inflating frequently,vehicle stability bad and unable bear the thorn to pitch.it is used to the mechanical vehicle of industey forkift truck,tractor,platform trailer ect.

该产品滚动阻力小，节油效果好，在使用过程中无需维护保养，使用寿命长，耐磨耐刺扎，转向灵活，车辆运行平稳。克服了充气轮胎需要经常充气，车辆稳定性差，不耐刺扎等缺点。主要是工业机械类车辆用胎（叉车、牵引车、平板拖车等），是冷冻库物流库、立体库，自动化流水线车间、石材加工厂、机械加工厂等特殊场地车辆的首选产品。

Digging a trench, digging-in the gun, gun and small arms maintenance — he was very strict about all this.

无论是挖战壕，挖炮位，还是火炮和轻武器的维护保养，他对所有的一切都有着严格的要求。

It is used for inside communications in the power system and for transmitting information about maintenance of transmission line,and may be also used for common public service network,and as high frequency channel,movement signal and communication channel for relay protection in power system.

用于电力系统内部的通信及输电线路维护保养信息的传送，也可用于一般的公共服务网络，作为电力系统继电保护的高频通道、运动信号及通信频道等使用，同时能起到良好导体屏蔽地线的作用。

Having absorbed all advantages from exotic machines and designed according to the standard of ASME, this harrow has adopted combined structure whose rigid frame is welded with square tube, equipped with hydraulic up-and-down road wheels, spring leveling device and sealed bearing with spheroid outer surface and square inner hole special for disc harrow.

此耙吸收了国外同类先进产品的优点，按部颁标准设计，整机采用组合式结构，以方型焊接管整体式钢性耙架为主体，配有液压起落运输轮，弹簧调平机构和圆盘耙专用的外球面内方孔密封滚动轴承，结构合理、坚固耐用，运输方便，回转半径小，易于调整，便于维护保养，是目前国内先进的圆盘耙产品。

Be responsible of machine maintenance and equipment calibrations

负责设备的维护保养及校正

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。