Lye — spelled l-y-e — is also called sodium hydroxide or potassium hydroxide.
碱液也叫做氢氧化钠或者氢氧化钾。
The positron annihilation lifetime spectrum(PALS) method was employed to study the effect of proton radiation on microstructure of the space grade KH-L-Y polysilicone rubber.
用正电子淹没寿命谱方法（PAL S）研究了质子辐照对空间级硅橡胶KH- L - Y微观结构的影响。
Remarks: This copy was listed as lot 8 in L. Y. Woo's Catalogue of Red Revenue 3c Surcharges published in 1972.
附注：此件在1972年吴乐园的《吴氏邮票让品目录》中列为第8号让品。
Remarks: This copy was listed as lot 8 in L. Y. Woo's Catalogue of Red Revenue 3c Surcharges published in 1972.
附注：此件在1972年吴乐园的《吴氏邮票让品目录》中列为第8号让品。
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