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Since the application of electromagnetic technology，the investigation of microwave absorbing materials has been widespread concerned in the world. With the development of technology，the effect of microwave absorption technology is constantly increasing in the world. Up to now，the structural design and electrical performance simulation calculation of microwave absorption coatings play an increasingly important role in the preparation of microwave absorption coatings. The design and optimization of coating structure can directly improve the absorption performance. Nowadays，microwave absorbing materials usually have multi-layer structures such as impedance matching layer，absorption layer and bonding layer. Their reflection coefficients are determined by the thickness，magnetic permeability，and dielectric constant. Only relying on the experiments to study the influence of reflection coefficient must be inevitably resulted in a relatively broad and blind workload. Based on this， three kinds of microwave absorption coating absorbers were selected to carry out electromagnetic parameter testing and analysis. The electromagnetic properties of single layer，single layer and double layer structure combined with two kinds of absorbers were simulated and calculated under the 1.2 mm thickness of the coating. Four optimal coating design schemes were obtained through the simulation calculation，and the electrical performance experiment were further completed for comparison. The results show that the electrical performance verified by experiment is in good agreement with the trend of simulation calculation results. Finally，the optimal coating is the single-layer coating with the Absorbent A∶ Absorbent C=2∶1. At this time，the simulation calculation and experimental results of the microwave absorption coating both show relatively high absorption performance.

Melamine foam (MF), a promising development in light materials, finds application in construction, agriculture, aviation, transportation, electronic message, and other fields due to its excellent thermal insulation performance, sound absorption and noise reduction capabilities, safety and health benefits, as well as easy processing. However, its own shortcomings such as hardness, poor toughness, fragility, and slag removal greatly limit its application scope. In this review, a survey of the literature from two aspects of toughening of melamine resin and regulation of MF pore structure are reviewed to explore the research progress of toughening modification of MF. The principle, merit, and demerit of different modification methods are analyzed. In addition, owing to the extensive literature available, this article also summarizes the representative achievements of the nanotechnology modification of MF derivatives (carbon foam and carbon aerogel). Eventually, based on an assessment of current application status for both MF and its derivatives while considering existing challenges in their modification processes using nanotechnology approaches, we discuss future prospects for their application.

As far as the current situation of children’s English picture book translation and reading teaching is concerned, there exists the phenomenon that teachers pay little attention to translation and reading teaching, and the teaching effectiveness is low. This paper evaluates the translation and teaching of English picture books to children using the theory of multiple intelligences. The problem of data input and output is solved through the decision-making unit (DMU) as well as the C2 R model composed of the DEA model. Based on the fuzzy comprehensive evaluation method and the target classification method to evaluate the students’ English learning quality and design the evaluation module, we construct the children’s picture book English teaching model under the combination of the DEA model and the multiple intelligences theory, and at the same time, we take the eight domains of the multiple intelligences theory as the evaluation indexes, combine the fuzzy comprehensive evaluation and the principle of the target classification method to evaluate the student’s learning quality of the English picture book translation and reading to analyze The status quo of children’s English picture book teaching under the theory of multiple intelligences as well as the teaching results, comparing the results of the students in the two classes and analyzing the data results statistically. Students are most interested in reading children’s English picture books when they are between 0 and 2.4. The experimental class has a higher translation skill score than the control class, with an increase of 2.79875, 2.225, and 1.975, and the translation part of the improvement is more effective.