求翻译!汉译英!不要机器翻译!翻译的好的话,一定加分!谢谢了!

7.The instrument calibration of sample preparation 7.1 equipment.7.1.1 various compounds blending equipment:has the temperature adjustment function,used for each for the element compound melt even,will melt even the elements of compounds to join in the sample polyolefin standard.Equipment can be turn galvanometer measuring type (with mixed probe) small range or big range mixer.Note 5:can choose single screw or double screw laboratory equipment to replace melting with extrusion blending equipment,but programmed experiment need more material.Dry uniform technology can also be used for sample of blending,and do not need to use compounds melting equipment,but don't recommend using this method.7.1.2 analytical balance:accurate to 0.1 mg.7.2 the specimen preparation equipment:7.2.1 hot pressing device:used to neutralize work-in-progress,have the temperature,pressure and cooling rate adjustable function.See ASTM D 4703 and this standard section 11.7.2.2 overflow type of press mould devices:the stainless steel mold,sample thickness of 3.2 mm,sample shall cover Mylar film,with level off,at least 2.5 mm thickness of stainless steel pressure head.Note 6:the injection molding equipment instead of hot pressing molding and overflow type presses the membrane.Note 7:this paper suggest using 3.2 mm thickness,also can be the be fond of according to users and change.If there are other materials in when heated non-adhesive film,also can be used as a cutting board; In addition,some methods do not use cutting board,and use of the containing cr stainless steel support plate.The instruments shall be put in the samples will smooth flat plate,in order to avoid pollution.7.3 X rays light tube,mass spectrometer determination system:according to C 1118 and E 1621 technical requirements and regulations the wave dispersion of X-ray fluorescence spectrometer demand condition.