slack tide 平潮 ; 滞潮 ; 是什么意思及发音
slack tide detail 憩潮
low tide slack water 低潮峙憩流
high tide slack water 高潮憩流
The hybrid sturgeon in cement pool had the habit of hiding during the day and coming out at night, while that in deep water cage stayed at the base in riptide and swam in slack tide.
水泥池养殖的杂交鲟具有昼伏夜出习性，深水网箱养殖的杂交鲟流急时在网箱底部活动、流缓时到水层中游动；
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