Since opening and closing the connection is the most expensive part of interacting with a database, you will want to pool and reuse your database connection.
因为在于数据库交互时，打开以及关闭数据库的开销是非常昂贵的，您应该将您的数据库连接放在池中并且能重新使用。
Providing value is so important I’m opening and closing this list with it.
提供价值非常重要，所以我用它开始也用它结束。
This video dress displayed a time-lapsed image of a rose opening up and closing, with an array of colours and light, made possible by 15, 000 LEDs embedded in the fabric.
这款视频服装显示出一幅缩时拍摄影像——植入织物的15，000个LED使一支玫瑰能够自如地开合，并产生一系列色彩和光亮变化。
This area contains the opening tag and the title tags (), and is then completed with the closing tag.
这个区域包含开始标记和标题标记（ ），然后以结尾 标记结束。
The few thousand people invited to the opening and closing ceremonies for each day's run have had to pass through security checkpoints with metal detectors.
在每天火炬接力的开幕和闭幕仪式上都会有数千人受邀参加，这些人必须通过安检点，经过金属探测器的检测。
Device-to-device communication also assists with decisions made within the enterprise to affect changes at the remote location (opening or closing a valve or stopping an appliance, for example).
设备间通信还有助于企业内部作出决策来影响远程位置的更改(如打开或关闭阀门或停止设备运行)。
It houses the main Olympic Stadium, where the opening and closing ceremonies take place along with the track and field events.
这里建有奥林匹克主体育场，开闭幕式以及田径赛事将在这里举行。
They don't want to have to deal with opening and re-closing things because it's difficult to deal with bulk storage in microgravity.
他们不想要打开包装再封上，因为在微重力条件下处理大包装的东西很困难。
In other words, bless them all, and get on with the only thing you have any power about, which is opening or closing your vortex to your natural state of Well-Being.
换句话说，为所有的他们祝福，只去做任何让你感觉有力量的事，那会让你打开或关上你自然的幸福快乐之涡流。
Comply with the opening and closing procedures.
遵守开始营业和结束营业的程序。
The other half have at least one thing in common: the letters opening with the recipients name and address and the closing with your name.
在另一半的信函中，至少有一样东西是相同的：先前信函中收件人的名称、住址以及您的签名。
You should always keep up a daily high and low chart with opening and closing on it and keep your Trend Line on this daily chart.
你应该始终保存含有每日开收盘价的日图表，并且画上趋势线。
The cycle of geosyncline formation and orogeny can be integrated with the plate tectonics concept of opening and closing oceans in a simple and natural way.
这种地槽的形成与造山作用的循环可以以一种简单和自然的方式与板块构造的海洋开合理论结合起来。
Gate keeps closely movement with gate when opening and closing, makes valve open and close stability and cuts off the media, and so on.
在关闭和开启过程中阀座跟闸板一直紧贴运动，使得阀门启闭力稳定，并且具有切断介质等特点。
This case has more advanced anterior disc displacement with clicking sounds in opening and closing.
这个病例关节盘前移位较重，张闭口时有弹响。
The art festival mainly includes a grand opening ceremony and closing ceremony, large scale theatrical performances with various characteristics, and paintings and photographic exhibitions.
艺术节的内容主要包括隆重的开幕式和闭幕式，各具特色的大型文艺表演以及美术、摄影展览。
Speed control Valves are available for controlling valve opening or closing speed with pneumatic actuators.
速度控制阀可以用来控制阀门气动执行器的开启或关闭速度。
Commonly, by opening one switch and closing the other, two group equations are set up to measure rotor earth-fault resistance in the rotor earth-fault protection with switch sampling principle.
切换采样转子一点接地保护，通过两个静态开关一开一合建立两组方程来求解接地电阻与位置。
In the distance, there is the air compressor. All valves in this system are pneumatically operated with quick opening and closing.
远处为空气压缩机，系统内所有自动阀均为气动，开关迅速。
We are continually opening doors with hope, closing them with despair.
她公开声称的信仰与实际完全对立；希望是与绝望对立的。
The regulating wheel is used to regulate the height of the front drawer panel; and the buffer mechanism makes opening and closing the drawer easy with collision.
通过调节轮可调节前面板的高低，缓冲机构的设置使得该种抽屉在拉开和关闭时都不会因受力不均而产生碰撞。
Methods The electric conduction quantity of acupoints selected with Linggui Bafa at opening and closing states was measured systematically in different seasons.
方法：以穴位导电量为指标，分别在不同季节系统测量灵龟八法穴位在“开”“闭”状态的导电量。
With the much higher operating voltages now in use the projected voltage transients or surges due to switching i. e. the opening and closing of circuit breakers, have become the major consideration.
目前随着更高工作电压的使用，由于断路器分闸、合闸操作所引起的电压暂态过程或过电压．已成为主要考虑的方面。
The other half have at least one thing in common: the letter's opening with the recipient's name and address and the closing with your name.
在另一半的信函中，至少有一样东西是相同的：先前信函中收件人的名称、住址以及您的签名。
Design and manufacture of a new type of planar flexure hinges micro-grabber were introduced based on the research of flexure hinges associated with an opening-closing experiment.
在研究柔性铰链的基础上，介绍了平面柔性铰链微夹持机构的设计与制作，并对此进行了张合实验。
Hinge products of Mingmen are finely processed with advanced equipment, and they operate smoothly during opening and closing.
名门合页系列产品，采用先进的设备精细加工而成，产品开合更平滑顺畅。
Hinge products of Mingmen are finely processed with advanced equipment, and they operate smoothly during opening and closing.
名门合页系列产品，采用先进的设备精细加工而成，产品开合更平滑顺畅。
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