二金属的

Activity of PncA protein is influenced by EDTA or divalent metal ion.

PncA蛋白也会受到EDTA及二价金属离子的影响。

Furthermore, it was discussed for the method of normalization by AVS in predicting chemical activity and bioavailability of divalent metal.

探讨了应用AVS归一化沉积物中二价有毒金属评价其化学活性和生物可用性的可能性。

Second, Duckbill valve Water Pump Control Valves pros and cons: 1 advantages: Duckbill valve, low cost, such as the use of appropriate rubber material than metal valve service life, easy installation, installation of flexible and diversified ways to repair.

二、鸭嘴阀的优缺点： 1、优点：鸭嘴阀成本低，如采用合适橡胶原料使用寿命超过金属止回阀，安装方便，安装方式灵活多样，可修补。

Based on the above experimental results, the DNA cleavage mechanisms of Ser-His and ethanolamine were proposed.

它们与丝组二肽一样，都可以在没有金属离子存在的条件下以水解方式切割DNA，这在世界上属首次报道。

Effects of dealumination and metal modification of mordenite catalyst on synthesis of ethylenediamine were studied.

研究了丝光沸石脱铝及金属改性等对合成乙二胺反应性能的影响，通过X荧光和XRD等手段对所得催化剂进行了表征。

"Arsenic pentoxide (As2O5) is also used in insecticides, herbicides, metal adhesives, and pigments ."

五氧化二砷(AS2O5)是杀虫剂、除草剂以及金属黏合剂的主要成分。

"Arsenic pentoxide (As2O5) is also used in insecticides, herbicides, metal adhesives, and pigment s."

五氧化二砷(AS2O5)是杀虫剂、除草剂以及金属黏合剂的主要成分。

"Arsenic pentoxide (As2O5) is also used in insecticides, herbicides, metal adhesive s, and pigments."

五氧化二砷(AS2O5)是杀虫剂、除草剂以及金属黏合剂的主要成分。

Physical idea of the vector method is clear, stable and convergent. The diffraction problem of plane wave with polarization incident upon 2-D sub-wavelength metal gratings can be processed.

这种矢量模式方法物理概念清晰且稳定收敛，可以处理任意偏振态平面波入射到二维亚波长金属光栅中的衍射问题。

Secondly, there are the clusters with clear 7 fold symmetry and transformation point at lower temperature in liquid metals.

二是发现液态金属中存在着明显的7度对称性原子团和低温端相变点。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。