Land leveling is an important measure for improving the efficiency of farm land surface irrigation and saving the resources of water.
平整土地是提高农田灌溉效率，节约水资源的一项重要措施。
Methods for implementing such a water saving measure are discussed.
并对这一节水新措施的实施方法进行探讨。
The solar constant water heater is a novel solar water heater which can measure up to the requirements on energy saving and environment-friendliness and is suitable for promotion and popularization.
是一种符合节能 环保要求，适于推广普及使用的新型太阳能水加热装置。
The solar constant water heater is a novel solar water heater which can measure up to the requirements on energy saving and environment-friendliness and is suitable for promotion and popularization.
是一种符合节能 环保要求，适于推广普及使用的新型太阳能水加热装置。
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