采用高速摄影法和电极触点法，对干砂消失模铸造金属液的充填形态进行了初步研究。
The pilot study was done on the filling shape of liquid metal in lost foam process with dry sand by using rapid photography method and contact time method.
采用高速摄影法，对灰铸铁件消失模铸造充型形态进行了初步研究。
The filling morphology of gray cast iron melt in lost foam casting was observed by rapid photography method.
摄影之中常用的清晰与模煳，留出呼吸的空间等等，都与美学上虚实的观念有关。
Among the commonly used photographic clarity and mold Hu, leaving a breathing space, etc. , with the aesthetic concept of the actual situation.
摄影之中常用的清晰与模煳，留出呼吸的空间等等，都与美学上虚实的观念有关。
Among the commonly used photographic clarity and mold Hu, leaving a breathing space, etc. , with the aesthetic concept of the actual situation.
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