做成固體的東西
這一支直接就是那個畫面：該動的不動了，該是液體的也變成固體了。
adjective · B2
Used about electrical equipment that works with electronic parts such as chips, so that it has no moving mechanical parts and no glass tubes inside.
固態的
核心畫面
Hold two machines side by side. In the old one something has to move for the work to happen: a disk spins, a needle slides, a glass tube glows. In the new one nothing moves at all — the whole job takes place inside a firm block of material, and from the outside it is silent and still. That stillness is a useful way to hold solid-state. Whatever used to spin, glow, or slosh has been replaced by something solid.
可以把兩台機器擺在一起看。舊的那台，工作時一定有東西在動：碟片在轉、唱針在滑、真空管在發亮。新的那台什麼都不動——整…更多收起
可以把兩台機器擺在一起看。舊的那台，工作時一定有東西在動：碟片在轉、唱針在滑、真空管在發亮。新的那台什麼都不動——整件事就在一塊結實的材料裡面完成，外面看起來安安靜靜。這份「什麼都不動」就是掌握 solid-state 的好方法。本來會轉、會亮、會晃的東西，都換成了固體。Two branches
研究固體的那門學問
同樣兩個字，後面換成學科名詞，指的就不是機器，而是研究「固體裡面發生什麼事」的學問。上面那些晶片和電池，正是這門學問做出來的產物，所以兩支互為因果。
adjective · C1
Relating to the science of solid materials: how solid substances such as crystals and metals behave, and especially how they let electricity pass through them.
固態（學科）