2results about How to "Meet the selection needs" patented technology

The utility model discloses a novel plankton sampling head, including bottom plate, the bottom plate middle part is provided with the air extraction hole, the air extraction hole below is provided with the fan, the air extraction hole top is provided with the mounting seat, the mounting seat is used for putting the petri dish, the mounting seat periphery is provided with at least three movable fixed clamping jaw, and at least three movable fixed clamping jaw cooperation fixed petri dish, the petri dish top is provided with the sampling distribution board, the sampling distribution board is connected with the outer protection casing, the outer protection casing cover is established in the mounting seat periphery and is sealedly connected with the bottom plate sampling space, the air extraction hole is through -connection with sampling space, the fan removes the air in sampling space from the air extraction hole, the sampling distribution board is used for the even diffusion of external air to the petri dish. The utility model can accommodate the matching petri dish of multiple types, and the operation is convenient and reliable.

A fabric body comprises a plurality of basic weave units, each basic weave unit is a plain weave formed by interweaving warp yarns and weft yarns, the warp yarns comprise first warp yarns and second warp yarns which are alternately arranged, and deep and shallow vertical stripes which are alternately arranged are formed. The warp density of the warp yarns of the deep vertical stripes is larger than that of the light vertical stripes, the width of the light vertical stripes is larger than that of the deep vertical stripes, the fabric body has a concave-convex feeling, the color of the fabric body is layered after dyeing, the fabric body has a bubble hand feeling, and the warp yarns are 15D / 6F semi-dull chinlon FDY; the weft yarns comprise yarns A and yarns B, and the yarns A 21 are 15D / 6F semi-dull chinlon FDY; the A yarns are 30D / 12F semi-gloss chinlon FDY, the B yarns are 30D / 12F semi-gloss chinlon FDY, seven wefts of the fabric main body form a cycle, six A yarns and one B yarn which are sequentially arranged are arranged in one weft cycle, the B yarns correspondingly form transverse stripes, and plaid patterns are formed between the transverse stripes and the deep and shallow vertical stripes. And more and better selection requirements of consumers can be met.