超速离心机

But the material particle DNA sharp separation purification to the ultra centrifugal equipment (supercentrifuge, turned the head with appurtenance) to set a higher request.

而质粒DNA的快速分离纯化又对超离心设备（超速离心机、转头和附属设备）提出了更高要求。

The rate of sedimentation depends on the molecular weight of the molecule and thus the ultracentrifuge and be used to separate a mixture of large molecules, such as large colloidal proteins, and estimate particle sizes.

物质沉淀率取决于分子本身的重量，所以可用超速离心机分离大分子混合物，如：大胶体蛋白，或用于检测物质颗粒大小。

Ultracentrifuge A high-speed centrifuge, operating at up to a million revolutions per second that is used to sediment protein and nucleic acid molecules.

超速离心机：一种高速离心设备，运转时转速可达每秒百万转，常用于沉淀分离蛋白质与核酸分子。

Take the 10~12ml single-valve capacity as the example, with flings turns the head to separate evenly, 36.000rpm 60 the hour, turns the head with the angle type to separate 45, OOOrpm 36 the hour, the former including adds the deceleration to use in common 130,000,000 revolution of actuation department lives, the latter must use 100,000,000 revolution of actuation department lives, this was 100 ~ 20,000,000,000 transfers to at that time the supercentrifuge total life looked, without doubt each time tests the expense to be excessively high, in addition the CsCl amount used are many, price expensive and so on factors, causes this kind of separation purification work to become the very expensive experiment.

以10~12ml单管容量为例，用甩平转头分离，36.000rpm 60小时，用角式转头分离45，OOOrpm 36小时，前者包括加减速在内共用去1.3亿转驱动部寿命，后者也要用去1亿转驱动部寿命，这对当时超速离心机总寿命为100~200亿转来看，无疑每次实验费用过高，加上CsCl用量多、价格贵等因素，使这类分离纯化工作成为非常昂贵的实验。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了