For the sandy soil foundation with not large dropdepth it generally selects to use light well drop, so it can meet the requirement of safety, adaptation and economy.
对于降水深度不大的砂性土地基，一般选用轻型井点降水，可以满足安全、适用、经济的要求。
2
To create some depth to our contents, apply a Drop Shadow using the attributes shown in the image below.
应用下图演示属性设置投影，来为我们的内容物创建些深度。
3
For example, a scope of 7 to 1 means that with a water depth of 17 feet and the boat's bow 3 feet above the water (total vertical drop of 20 feet), 140 feet of anchor rode would be let out.
例如，a scope of 7意味着当水深为17英尺，船头距水面为3英尺时(总共的垂直落差为20英尺)，140英尺的锚缆将被放出。