用户粘性（viscosity of users）的维持有赖于提供服务的私密性，涉及个人的服务往往粘性较高，例如邮箱、相册、博客、即时通讯工具等，校内网集合了邮箱、相册、...
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This oil possesses characteristics of high viscosity, high flash point, low ash, low residual carbon and low evaporation loss, so as to meet the requirements of users.
该油具有高粘度、高闪点、低灰分、低残炭、低蒸发损失等特点，可满足用户需要，具备生产条件。
The machine also has the device of time and speed control, the users can choice freely to control the mixing time according to viscosity of ink!
本机亦有时间控制及调速之装置，使用者可依油墨之粘度自由选择控制搅拌时间！
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