b. symmetric difference the list of users of 1 but not both equally of the offered sets. Usually symbolized: A + B And therein I believe I can lay my finger upon the difference between the seamen of yesterday, who are still with us, along with the seamen of https://thermalstresstestingmetho12456.daneblogger.com/34703242/considerations-to-know-about-pcb-thermal-cycling-failure-modes