也许你应该尝试一些拼写变化:
irrigation requirements » irrigation equipment, nutrition requirements
requirements systems » requirements business, requirements section, requirements based
systems provision » systems precision, systems profession, systems vision
array imaging » arrays imaging, airway imaging, ray imaging
array along » array arcing, array paving, array strong
arrays long » arrays ang, arrays load, arrays lens

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: irrigation requirements systems provision ((((array along) OR (arrays long))) OR (array imaging))~.
• Adding a wildcard symbol may retrieve word variants: irrigation requirements systems provision ((((array along) or (arrays long))) or (array imaging))*.