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- pipe irrigation by gravity 自压管灌
- pipe irrigation with water diversion by gravity 自压管灌
- The stone rolled down the hill by gravity. 石头在重力作用下向山下滚去。
- The stone rolled down the mountain by gravity. 这块石头由于重力作用而滚下山。
- Contents pass by gravity into a receptacle below. 物体通过重力进入容器的底部。
- Irrigation by electric power is already used in this region. 这个地区已经开始施行电灌农田了。
- A pipe or channel designed to transport water from a remote source,usually by gravity. 导水管，沟渠设计用于从远地水源输水的管道或通道，通常通过重力（输送）
- A pipe or channel designed to transport water from a remote source, usually by gravity. 导水管，沟渠设计用于从远地水源输水的管道或通道，通常通过重力（输送）
- irrigation by gravity 自流灌溉
- Strong winds driven by gravity blow from the pole to the coastline. 受地球重力作用的大风从极点吹到海岸线。
- irrigation by gravity flow 自留灌溉
- Deep pipe irrigation can be especially useful on slopes and in crusty soils where surface applied water will run off. 描述:深度管道灌溉在斜坡和硬质土壤环境中非常适用，因为在那些地方地表灌溉浪费水资源。
- Many farmer's fields are irrigated by water brought from a river or lake through bamboo pipes. 很多农民的田地是通过竹管从河流或湖泊中引水灌溉的。
- This water was distributed to and over the fields primarily by gravity flow. 这些水主要靠自流灌溉到田里。
- Many farmers'fields are irrigated by water. 许多农民的土地用水浇灌。
- Amateur pressure pipe irrigation works done since the generation of software quality table! 业余做的水利工程压力管道质检表自生成软件！
- The purified water then descends by gravity to a basement holding tank. 经过净化的水靠重力流到地下室的另一个集水箱里。
- It gives the scientific voice way of horizontal crustal stress by gravity. 给出了重力所致水平地应力的科学表达方式。
- An extensive area of land drained or irrigated by a river system. 流域由一个大河系排水或灌溉的广阔的土地区城
- The satellite is always escaping from the earth only to bepulled back by gravity the same distance it has escaped. 卫星总是要飞离地球，而结果却被地球引力拉了回来，拉回的距离与越出的距离相等。
