潮汐、风暴潮对波浪的作用是通过其产生的不定常水深与流场实现的；水深与流速对波向的影响很小。
The sea level and current velocity have an effect on wave height, and the wave direction modulation is small.
离心式污水泵(即污水提升泵)，是典型的以输送固液两相流为主，同时含有不定量气体的多相流流体机械。
The centrifugal sewage pump is the typical multi-phase flow fluid machinery, which is mainly used to transport and lift solid-liquid two-phase flow including a certain extent of gas.
黄河河口流路是决定油港港址的关键，尽管有河口流路安排这个不定因素。
The key of the question is that the site of oil dock is determined by the flow couorse at the estuary of Yellow River.
中心配备了国内外一流专家定期为青年教师及学生上课，并计划不定期与国外学校进行艺术交流。
The centre has hired top-grade experts at home and abroad to give lessons to youth teachers and student periodically, and plans to have academic exchanges with foreign art schools.
中心配备了国内外一流专家定期为青年教师及学生上课，并计划不定期与国外学校进行艺术交流。
The centre has hired top-grade experts at home and abroad to give lessons to youth teachers and student periodically, and plans to have academic exchanges with foreign art schools.
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