螺旋

body whorl

体螺层

壳可分为两部分,含卷曲内脏器官的螺旋部(Spire)和完的最后一层,容纳头和足的体螺层(body whorl). 螺旋部一般由许多螺层(spiral whorl)构成,有的种类退化(鲍、宝贝等). 壳顶端称壳顶(apexex),为最早形成的一层,各螺层间的界限为缝合线(suture),

bottle shaped screw base support

瓶形螺栓支座

bottle screw || 螺旋拔塞器, 螺旋起重机 | bottle shaped screw base support || 瓶形螺栓支座 | bottle sickness || 瓶装葡萄酒的病害

screw coal conveyer

螺旋式输煤机

screw cleaning machine 螺旋清洗机 | screw coal conveyer 螺旋式输煤机 | screw coal unloader 螺旋卸煤机

spiral ratchet drill

擦旋钻

2667. spiral ramp vortex generators ==> 螺旋坡道涡流发生器 | 2668. spiral ratchet drill ==> 擦旋钻 | 2669. spiral ratchet screwdriver ==> 螺旋槽棘轮旋凿

feed screw collar

进给螺杆挡环

feed screw 进给螺杆; 螺旋给料机; 螺旋送料机 | feed screw collar 进给螺杆挡环 | feed screw mechanism 进料螺杆机构

open newel stair

露明中柱旋梯,无中柱螺旋梯

open newel ==> 螺旋梯梯井 | open newel stair ==> 露明中柱旋梯,无中柱螺旋梯 | open node ==> 开型节点

hollow newel stair

无中柱螺旋梯

hollow newel ==> 螺旋梯梯井,旋梯柱井孔 | hollow newel stair ==> 无中柱螺旋梯 | hollow nose tongs ==> 空端夹子

helical tip speed

螺线桨尖速度

helical rake angle ==> 螺旋截尖角,螺旋前角,(铣刀片的)轴向刀面角 | helical tip speed ==> 螺线桨尖速度 | helical tooth ==> 斜齿

stave pipe

木板条水管,木质水管

spiral-welded pipe 螺旋形焊接管,螺旋形焊[缝]管 | spun pipe 旋制管 | stave pipe 木板条水管,木质水管

spiral stairs

盘梯,螺旋梯

2701. spiral-staircase coil ==> 毕特线圈 | 2702. spiral stairs ==> 盘梯,螺旋梯 | 2703. spiral staple chute ==> 暗井螺旋溜槽

Greco-Latin square：希腊拉丁方格

Granduation of curve 曲线递合 | Greco-Latin square 希腊拉丁方格 | Grand lot 大批

cunningham：帆前角下拉索

斜拉器:kicking strap | 帆前角下拉索:cunningham | 调整索:outhaul