Arrived, the packing is very strong. The quality is very good, oh, and the same as the description. Offer also benefits. satisfy.
到了，包装很健壮。质量极好哦，和描绘的相同。报价也实惠。满足。
Oh, the packing looks very nice.
这些包装很好看。
OH group is favorable for forming strong hydrogen bond between molecules, which pays an important role in the crystal packing.
OH 的存在，使分子间出现了强氢键，且对分子堆积成晶体起重要的作用；
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