这也可能是一个好主意，添加一些额外的充氧植物的池塘，以稳定的氧气水平，不断从接管藻类池塘。
It may also be a good idea to add a few additional oxygenating plants to the pond to stabilize the oxygen level and keep algae from taking over the pond.
这是一种全铝合金结构的连接管，用于空调器室内机与室外机的配管管路系统，其成本和质量均达到国际领先水平。
It is the whole Aluminum alloy connection tube which connected the house machine and main machine, use this tube system, we can get the lowest cost and the best quality in the world.
指出了现有钻井泵连接管线在安装使用中的缺点，结合当前技术水平，提出了一种新的管线结构。
The paper describes the disadvantage of previous pipe line connection in use and on the basis of present technology, has a new line connection arrangement.
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