The key , he said , was a depth of three meters , an overlapping duct system at the pool 's edges that all but eliminates waves , and two circulation systems , one at the bottom of the pool and one near the surface .
He tours and releases cds . His logo appears on t-shirts , baseball caps and , oddly , duct tape .
他巡回演说,发行专辑,t恤、棒球帽,奇怪的是,连管道带上都有他的标志。
The study focused on the most common types of breast cancer that are thought to arise in the milk duct .
该项研究,重点针对认为是发生于乳腺导管的最常见类型的乳腺癌。
Ideally , either side of the bend should be lined along a length equivalent to twice the duct diameter .
理想情况下,弯道的两边都应在两倍风道直径的长度上作衬里。
When the boat is under sail , water forced through the duct turns the blades of a small hydroelectric generator that charges a bank of lithium-ion batteries .