A gas differs from solid in that it has no definite shape.
气体不同于固体是因为(就在于)它没有固定的形状。
In the reverse direction, from solid to solution, the phase is abrupt and well marked.
在相反的方向，即从固体到溶液，相变则是突然的、十分明显的。
They have converted from solid fuel to natural gas.
他们已把固体燃料转变成天然气。
Socked and plug are precision machined from solid bar stock.
母插座和公插头采用实心棒料精密制造。
Socked and plug are precision machined from solid bar stock.
母插座和公插头采用实心棒料精密制造。
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