腕螺顶 [古生] apex of spiralia
断螺顶 [无脊椎] decollation
顶盖螺 Sabia conica
顶盖螺科 Hipponicidae ; Amaltheidae
钝顶螺旋藻 spirulina platensis ; Spirulina platensis Geitler ; irulina plate is ; Spirulina
螺旋千斤顶 screw jack ; jack screw ; jacking screw ; milling jack
圆顶螺母 domed nut ; cap nuts
螺纹牙顶 crest of screw thread ; tip of thread ; crest of thread
黛螺顶 dailuoding
方法：用分层随机抽样法确定调查点。 用尼龙袋集卵孵化法、顶管孵化法分别对人畜进行查病，用系统抽样结合环境抽样法开展螺情调查。
Methods: Using stratified sampling method to determine the survey places, The schistosomiasis in people and livestock were surveyed by the methods of nylon bag incubation and top - tube incubation.
本实用新型提供了一种新颖的顶拔器，它有一根螺杆与调节支承体的中心内螺孔联接。
The utility model provides a novel supporting pulling device which is provided with a screw rod connected with the center of an adjusting supporting body through inner threaded holes.
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