- just etching
- 适量: appropriate amount
- 蚀刻: etch; etching
- 蚀刻: [电学] [冶金学] etch; etching 铜版蚀刻 etching on copper sheets; 玛丽很喜爱蚀刻艺术。 mary is very keen on etching.; 蚀刻版 reproduction; 蚀刻机 etching machine; 蚀刻剂 etching agent; etchant; 蚀刻印刷 etch printing
- 不适量: underexercise
- 适量 向量: vector
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