Effect of Light Intensity and Nutrient Availability on Clonal Growth and Clonal Morphology of the Stoloniferous Herb Halerpestes ruthenica;

and Halerpestes ruthenica (Jacq.

The quantitative lead was added into the sample solution to let the concentration come up to be in the interval range suitable for determining by the spectrophotometry of arsenazo Ⅲ, which was used to determine lead in the Babbitt alloy.

Babbitt alloy is difficult to adapt higher temperature due to its low softening point.

The types of Hastelloy alloy and anti - corrosion property are introduced, and the related precautions are also presented from the aspects of design, formation, welding and machining etc.