研究了有机酸在阴离子交换柱垫片组（日本岛津）上的作用机制。
The mechanism of organic acids on an anion exchange column Shim pack (Shimadzu, Japan) have been studied.
装上螺钉、垫片和螺母，将锁手柄固定在其位置上。
Install the screws, washers and nuts that attach the lock handles in their positions.
玻璃板上的图像，然后转移到镍硅晶片，简称为“垫片”。
The image on the glass plate is then transferred to a nickel die, referred to as the "shim".
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