71results about How to "Reasonable length" patented technology

The invention relates to a novel GLP-1 derivative synthesis method, wherein the synthesis of three fragments can be performed at the same time so as to substantially shorten the synthesis cycle and improve the product purity and the yield.

The swimming apparatus pertains to swimming with special equipment for swimmers and divers and can be used for increasing speed, comfortable maneuvering, and making swimming more economical. The swimming apparatus comprises a tail fin, a hand-held fin and a dual snorkel.

The invention discloses a tunnel excavation construction method based on zonal fracturing evolution analysis of surrounding rocks. The tunnel excavation construction method comprises the following steps: performing excavation construction on a constructed tunnel in a mode of multiple segments in the longitudinal extension direction from back to front; when excavation construction on any one of thesegments is carried out, the steps are as follows: 1, determining basic mechanical parameters of the surrounding rocks; 2, performing zonal fracturing evolution analysis on the surrounding rocks; 3,performing pre-grouting reinforcement judgement on the tunnel; 4, performing pre-grouting reinforcement on the tunnel; 5, performing excavation construction on the tunnel; 6, performing excavation construction on the next segment; 7, repeatedly carrying out the step 6 until the whole excavation construction process of the constructed tunnel is completed. The tunnel excavation construction method disclosed by the invention has the advantages of simple steps, reasonable design, convenience in realization and good use effect; before the tunnel is excavated, the zonal fracturing evolution analysisof the surrounding rocks is carried out, and according to a zonal fracturing evolution analysis result of the surrounding rocks, pre-grouting reinforcement is carried out purposely, and the stabilityof the surrounding rocks of the tunnel and the security of the tunnel can be effectively ensured.

A unitary conduit repair joins first and second conduits each having open ends spaced from one another a predetermined distance, wherein the repair includes a unitary tubular body having a first end portion with an elongated female portion and an opposite second end portion with a male portion, and the unitary body has a total length greater than the predetermined distance between the ends of the first and second conduits.

Text processing includes: segmenting received text based on a lexicon of smallest semantic units to obtain medium-grained segmentation results; merging the medium-grained segmentation results to obtain coarse-grained segmentation results, the coarse-grained segmentation results having coarser granularity than the medium-grained segmentation results; looking up in the lexicon of smallest semantic units respective search elements that correspond to segments in the medium-grained segmentation results; and forming fine-grained segmentation results based on the respective search elements, the fine-grained segmentation results having finer granularity than the medium-grained segmentation results.