According to the testing of the thermal property of the refined hemp,the hemp fiber and the relative breaking strength of the bundle fiber after heating,we analyzed the changing regularity of the decomposing temperature,the decomposing process and the relative breaking strength of the industrial hemp.

This paper gives the re- lation of 1-factor and band with relative breaktivity and further discusses the structure of graphs and relative breaktivity.

Fracture strengths of domestic ceramic orthodontic brackets during mesial-distal archwire tipping;

Fracture strength of domestic ceramic orthodontic brackets during archwire torsion;

Force controlling method for measuring fracture strength and toughness of diamond film;

Influence of polypropylene tow fiber on hardness, weight, circumference, sucking resistant index of filter stick and finished filter stick rate was discussed under different breaking tenacity and breaking elongation.

Preliminary experimental results have given the effect of pretreatment process on the rupture strength of the micro-drills and diamond coating deposition on cemented carbide micro-drills with a diameter of 0.

Effects on yield strength and elongation ratio, rupture strength and elongation ratio and tearing strength were studied.

Improvement in breaking strength of nylon66 industrial yarn;

Uncertainty of expression and evaluation of measureing single yarn breaking strength;

Using the binary system solution which is made up of CaCl_2,water,ethyl alcohol(1:8:2 mole ra- tion),to treat fine spinning woolen fabric for its wrinkle-resistant finishing,and under the condition of three kinds of processing temperatures (50℃,60℃,70℃) and two kinds of time (20min,40min),to test the an- gle of crease recovery and breaking strength of woolen fabric after the treatment.