| 单词 | thermoplastic sheet |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔heat-seal〕To enclose an object in a thin, clear thermoplastic sheet that is bonded by heat and pressure to form a closure against air or tampering.热封：通过高温和压力把某种物体封装于透明的热塑性塑料薄层之 中，从而对空气或外界干扰形成一种保护层美国传统 |
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