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151. The double-screw squeezer has a tapered intermediate shaft and the helical blade with variable pitch, and can squeeze fish stock and expel most of the water and fat.

152. As indicated in the section on simple machines, a screw acts with a wedging action and consists of a circular cylinder(or truncated cone)with a helical groove in it.

153. The dynamic stress in helical spring has been analyzed with a spatial mechanical model for bent lever and an analytic solution for the partial differential equation has been found.

154. Materials and Methods:The enhanced Helical CT finding of malignant SPN 50 cases and inflammation SPN 26 cases and tuberculoma 12 cases by proved operation or pathological were studied retrospectively.

155. Objective : To discuss the value of multi - slice Helical CT in diagnosis of non - calcified costal cartilage fracture.

156. In the wake of the diminution of helical lead angle the influencing extent of the variation of materials filling rate inside the screw conveyer on the screw shaft deflection was reduced.

157. Then,[http://sentencedict.com/helical.html] the paper accomplish the accurately 3D-modeling of the four generally used types of gears: cylindrical spur gean cylindrical helical gean straight bevel gear and curved-tooth bevel gear.

158. Based on the forming principle of stranded wires helical spring and the current problems in the manufacturing process, a new design scheme for the number control machine is put forward.

159. Conclusion: Multi-slice helical CT was effective for differentiating clear cell from non-clear cell carcinoma, but has little value in differentiating papillary from chromophobe RC.

160. The measured results show that the main flow in the hydrocyclone is a three dimensional helical downward movement with an air core directly connected with the underflow pipe.

161. For example: screw lift (worm) - (2.5 tons -200 tons), SN series of small hardened helical gears geared motor , high efficiency (95%), torque, small in size.

162. This series machine is suitable for batchsingle manufacturing column straight pinions, slope pinions, helical gear gear.

163. Gives a thorough introduction to the kinematics, design and stress analysis of spur gears, and a simple introduction to helical, bevel, and worm gearing.

164. In a globular protein, certain portions of the chain are coiled into helical segments.

165. A practical mechanism for the core-pulling of inside groove was presented. The core-pulling was achieved by applying the deformation of helical spring steel sheet during the ejecting process.

166. Objective: To contrast data of reconstruction in lung helical scan and general CT scan, to evaluate the value of its clinical application.

167. Objective To study the diagnosis value of helical CT singlet hilum of lung and mediastinal lymphadenectasis.

168. Helical - corrugated pipe can deliver more sediment with power input than either standard corrugated or plain pipe.

169. Conclusion Multislice helical CT is very useful for the diagnosis of mesenteric panniculitis.

170. The technology of pulling forming method of helical vane is introduced.

171. The paper presents an integrated mathematical model for producing a rotating cutter with constant helical angle.

172. Insert nut is designed for rapid installing into thermo-plastics by means of ultrasound. Its two opposite helical knurl bands provide a combination of high torque and pulling out resistance.

173. In 1953, Watson and Crick set forth their hypothesis for the double - helical nature of DNA.

174. Helical antenna has not only almost identical to the resistive input impedance in broad bandwidth, but also works by the end of super-gain front lobed map in the same frequency band.

175. Among the synthetic helical polymers, polyacetylene derivatives with conjugated main chains and functional pendent groups, have gathered much more attention.

176. A concept of gain factor is in- trduced to analysis the gain frequency characteristics of sectional-uniform helical antennas. Theoritical and experimental results are in good agreement.

177. In the dissertation, comprehensive investigation of the helical FCG and of the power conditioning circuit is carried out theoretically, numerically and experimentally.

178. Helicity is the basic physical pattern for the maintenance of atmospheric activities. Boundary layer fluids, turbulences, severe storms and tropical cyclones are highly helical in their structures.

179. It is concluded with the application method of helical spring parameters and the simulation method of high frequency response of suspension in wave theory.

180. According to the principle of fluid mechanics, the law of laminar helical flow of power-law fluid in eccentric annuli is studied intensively in this paper.