The term element refers to a pure substance with atoms all of a single kind. At present 107 chemical elements are known.
元素这一术语是指由单一种类的原子所组成的纯物质。现在已经知道有107种元素。 收藏。
The term element refers to a pure substance with AToms all of a single kind. AT present 107 chemical elements are known.
元素这一术语是指由单一种类的原子所组成的纯物质。现在已经知道有107种元素。
The opposite substrate 20 has substantially the same outline as the seal material 107. By this seal material 107, the opposite substrate 20 is fixed to the element substrate 10.
对向基板20，具备与密封材料107基本相同的轮廓，通过该密封材料107，对向基板20粘接固定于元件基板10。
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