| Answer | Crossword Clue |
|---|---|
| constants | A situation or state of affairs that does not change |
| messes | A situation or state of affairs that is confused or full of difficulties |
| constants | A quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions |
| stems | the part of a word that does not change |
| stem | the part of a word that does not change |
| klystron | brand name for a vacuum tube containing an electron gun, a resonator that changes the velocity of the electron beam in accordance with a signal (buncher resonator), a drift tube in which the electron velocity does not change, another resonator that abstra |
