土工作业 meaning in Chinese

earth work

Execution of special geotechnical works - diaphragm walls
特种土工作业施工.隔墙
Execution of special geotechnical works - jet grouting
特种土工作业施工.喷射灌浆
Execution of special geotechnical work - displacement piles ; german version en 12699 : 2000
特殊土工作业.送入桩
Execution of special geotechnical works - reinforced fill ; german version en 14475 : 2006
特种土工作业施工.加固灌浆