According to the British scientific journal Nature reported from London, where a good contact angle measurement, Chinese scientists have proven insects called water striders is how to achieve a stable ground to stand on the mystery of water striders unsinkable. This water insects unsinkable mysteries article through multilayered screening experts to eventually be published in well-known publications - Natural Science magazine. This is the Chinese chemists in natural science magazine published the first article, creating a new era chemical and physical research. This article was written by Professor Jiang Lei Institute of Chemistry and his Ph.D. high cedar. In the course of the experiment the scientists study the use of optical contact angle measuring instrument to effectively carry out experiments and experimental data to obtain accurate contact angle measurement, the instrument provides a convenient software package for analyzing and collecting the results of the experimental procedure. This quantitative method can accurately calculate the bending characteristic parameter values, i.e., the equivalent flexural modulus and flexural rigidity. Equivalent bending modulus is independent of the fiber diameter values ??of the essential characteristics of the fibrous material to reflect the flexural properties of the fiber material by a single molecular structure itself determined numerically equivalent to the tensile modulus and the compression modulus of the pure integration along the fiber cross-section Average and. Heating, cooling and insulation and mold clamping structure is composite mold design an integral part. Structural design directly affects the appearance and internal quality product uniformity, but also affect the molding efficiency. For the different principles of particle size analysis instruments, measuring principle is based on the different characteristics of the particle is not the same, only the equivalent contrast, a direct comparison can not be laterally. Such as sedimentation particle size analyzer is based on an equivalent particle settling velocity contrast, the measured vertical diameter of settling velocity equivalent diameter, which uses the same diameter as measured particle settling velocity of homogeneous spherical particles to represent the actual particle size. Diameter of the laser particle size analyzer is the use of a laser diffraction and scattering characteristics as an equivalent contrast, the measured particle size of the equivalent diameter of the equivalent scattering, i.e., actual measured particles having the same scattering effect of the spherical particles to represent the actual size of the particles. When the measured particles are spherical contact angle measuring instrument retail, the equivalent diameter is its actual diameter. However, due to the shape of the powder particles of the material can not all be uniform, spherical, and have a variety of structures, and therefore, in most cases, the particle size measured by a particle size analyzer is an equivalent diameter of sense, and the actual particle size distribution will be some differences, and therefore has only a relatively meaning. Equivalent particle size analyzer direct contact angle, the contact angle measurement, ShengDing instruments provided by the Dongguan City Sheng Ding Precision Instrument Co., Ltd .. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.gdshengding.com) strong, credible, in Dongguan, Guangdong dedicated instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead ShengDing into the glorious instrument and you work for a better future!