摘要:
A mass analyzer comprising a sample preparation mechanism for preliminarily preparing an analyzing sample, an interface mechanism for preparing the sample into ions after the required preliminary preparation, an ion trapping part and analyzing part for analyzing the ions, and a controller. The ion trapping part and analyzing part is placed in a box portion of the body, while the interface mechanism is arranged on the front top of the box portion of the body. When the cover at the front top is removed, the front, top and right side of the interface mechanism are opened.
摘要:
A photosensitive polyimide resin composition has: a polyimide resin composition having a polyimide copolymer that is prepared by an imidation reaction of an acid dianhydride with a diamine; and a photosensitizer added to the polyimide resin composition. The polyimide copolymer has a polyimide constitutional unit-to-substituent ratio of 200 to 600, and the polyimide constitutional unit-to-substituent ratio is defined as C=A/B, where A represents a molecular weight of a repeating unit in a polyimide main chain constituting the polyimide copolymer, and B represents a total number of substituents in the repeating unit.
摘要翻译:光敏聚酰亚胺树脂组合物具有:通过酸二酐与二胺的酰亚胺化反应制备的具有聚酰亚胺共聚物的聚酰亚胺树脂组合物; 和加入到聚酰亚胺树脂组合物中的光敏剂。 聚酰亚胺共聚物的聚酰亚胺结构单位取代比为200〜600,聚酰亚胺结构单位与取代比定义为C = A / B,其中A表示聚酰亚胺中重复单元的分子量 构成聚酰亚胺共聚物的主链,B表示重复单元中的取代基的总数。
摘要:
A method and an apparatus for melting a metallic material in the form of a pile of elongate metal ingots, wherein the ingot pile are pre-heated in a horizontal pre-heating chamber while the pile is moved from its one end to the other end, and the pre-heated pile at the other end is pushed into a melting chamber which communicates with the pre-heating chamber and extends vertically downwardly from the other end of the pre-heating chamber, whereby the pile is turned sideways before falling down into the melting chamber, with a result of collapse of the pile into the individual metal ingots in the melting chamber. The melting apparatus may comprise a damper device having at least one damper member which is movable between its retracted position, and its operated position at which the damper member closes a space between an inner wall surface of the pre-heating chamber and the opposite surface of the ingot pile, and thereby intercepts flow of exhaust gases from the melting chamber through the space between the wall surface and the ingot pile.
摘要:
This invention relates to a method or apparatus by which comparatively low-voltage electric wires and cables laid at power stations and other locations can be diagnosed for deterioration of their polymer-insulation in a non-destructive way. The method or apparatus comprises applying a torsional force to the electric wire or cable, detecting the resulting repulsion as a torque, and estimating the degree of deterioration of the polymer-insulation in the electric wire or cable on the basis of the detected value of torque.