An element in product safety is the fabrication of stress or strain-free glass apparatus and systems.

一个要素，产品安全是捏造的应力应变或无玻璃仪器和系统。

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Invisible to the naked eye, the strain never-the-less is present and is a potential point of failure in the glass apparatus unless relieved.

无形的，以肉眼，该品种在不停的少，是当前和是一个潜在的故障点，在玻璃器具，除非宽慰。

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Objective: a simple apparatus for volatile oil determination is designed with the use of common glass apparatus in order to refreshen the shortcoming of pharmacopoeia device.

目的：用常用玻璃器具组装一种挥发油含量测定的简易装置，以补充药典含量测定方法的不足。

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Finally the glass surface onto which the apparatus was attached was immersed into a liquid heated to 300C (572F).

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Such a particle, if produced in his apparatus, would cruise through a detector made of barium-phosphate glass and leave a trail of damage along the way.

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