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Vapor phase liquid nitrogen freezers are suitable for the cryopreservation of large quantities of biological samples such as stem cells, embryos, vaccines, etc. They are made of low-temperature resistant stainless steel, have large capacity and are easy to operate. They are ...
细节 珩磨石的介绍 原则上,完美的磨刀石由三种不同的主要成分组成,可提供所需的切割效果。 磨料 磨料是每块珩磨石最重要的组成部分。使用各种粒度的合成金刚石或立方氮化硼 (CBN)。 纽带 ...
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At present: liquid nitrogen tanks are common low-temperature containers in laboratories and are often used to preserve specimens, samples, cells, etc., which require the constant temperature characteristics of liquid nitrogen tanks. Speaking of which, here comes the question. ...