采用拉链式塑料管作为渗灌管，在大棚中埋于地下不同深度，在不同工作水头下进行了基本渗流规律的试验研究。
Study on the basic seepage laws under different working heads, with zippered plastic pipes as percolation irrigation pipe embedded at different depths underground in the shelf.
本论文首先对拉链式塑料管大气、土壤中的渗流规律进行了试验研究。
This thesis, firstly, made an experimental study on the seepage flow both in air and oil with zippered plastic pipes.
产品特点：开身拉链式立领短款绒马甲，填充棉面料，内加摇粒绒的里子，保暖舒适，时尚休闲，穿脱简便。
Product features: open type zipper collar short velvet vest, filled with cotton fabric, and shake the fleece lining, warm and comfortable, leisure, fashion wear off simple.
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