This question is easier to answer if we think about how a technical project is implemented and the spectrum chart below shows some those steps.
After an initial design or proof of concept phase (left side of chart) but before the finished product (i.e. a building, an electronic or mechanical device) many other engineering tasks must be performed in order for the project to be successful, tasks such as Manufacturing, Test and Evaluation, Production, Operation and Sales Engineering are all critical to a successful product.
A simple way to think of the above is Engineering Technology is all about Applications Engineering that is applying Engineering principles to get the job done successfully.
Engineering Technology = Applications Engineering