Pricing for software - only load balancers starts at a few thousand dollars , and blackbox system pricing begins at around $ 10 , 000 . load balancing already is built in to some lan switches 纯软件的负荷平衡器的起价为几千美元，黑盒子系统的起价约1万美元，在某些局域网交换器中已装有负荷平衡功能。
4 . each set of pincers can be individual adjusted to their corresponding positions and functioned with automatic balancing . besides , an automatic down pulling stroke can be selected and controlled according to the tension of uppers 4 .每双爪子均可配合鞋型，独立调整相对位置及自动平衡功能，并可视鞋面松紧度，选择左右独立自动下拉之行程动作。
In the last part , this paper discusses the effect of some general network press test tools . in virtue of these tools , we test the capability of educational administration management information system , and compare its result with the result of the same system without network load balancing 最后，论文讨论了常用的网络压力测试工具，借助这些工具测试了开发的教务管理系统性能，并将测试结果与没有采用网络负载平衡功能的系统的测试结果做了比较分析。
Our results indicated that the score of depression was significantly lower in those engaged in volunteer work , and two physical performances ( tug and timed 5 - chair stand ) were significantly better in the hospital volunteers than the control group 结果发现：医院志工老人的忧郁程度明显低于对照组老人；身体功能表现方面，医院志工老人在一般活动度及下肢功能性肌力两项表现明显优于对照组老人，其余功能表现（含一般及快速步行速度、心肺耐力、平衡功能等）无显着差异。
