Standard Parts Library Management System Design This system is closely related to the specific application platform. The standard parts library management system manages the specific content of the standard parts library. Through the man-machine dialogue interface, the user searches the characteristic parameter table stored in the standard parts library, finds the required standard parts class, and finds the item characteristic table of the corresponding standard parts displayed to the user. The user selects the standard part parts that meet the requirements according to the required standard part size, and then links the data described in the standard part characteristic parameter table and the corresponding geometric program to display the display in the CAD system. The required geometry view of the part.
The definition of standard part identification code system code is very important in the formulation of standards. In the parts library, parts are organized in terms of classification and class hierarchy. Therefore, each part is assigned a unique identification code by an authority commissioned by the standardization body. The code contains the following information: the part supplier identification code that defines the part; the part class identification code to which the part belongs; and, if necessary, the identification property value code for the part. Code development should follow the following principles: uniqueness, clarity, non-redundancy, and scalability.
Considering that the standard part has its own characteristics and refers to the national standard, the identification code of the standard part is composed of the class name, the product standard number, the K component number, the view number, the view variant identification number and the assembly type. Standard parts library management system design. Standard parts library information retrieval module workflow. After the whole piece is found by the whole caller, the corresponding whole piece distributor is called. The function of the whole piece distributor is to call the corresponding view subroutine through the view number and state parameters of the entire view. The entire splitter parameter consists of the view number, status value, and geometry parameter values.
Conclusion The standard parts library proposed in this paper conforms to international standards. Compared with the existing standard parts library, the system uses a commercial relational database as the host DBMS of the characteristic parameter library, which facilitates the management of library contents and the characteristic parameter library and geometry library. Data transfer. And using AutoCAD system block and attribute mechanism, the information of standard parts can be automatically included in the engineering drawing list, which not only improves the efficiency and accuracy of professional design, but also realizes the transmission of standard parts management information from CAD to MIS (ManagementInformationSystem). .
Disposable serological pipettes with polyester fiber plugs are ideal for tissue culture applications. Crisp, black, highly legible permanent graduations prevent ambiguity and guarantee precise reading and accurate dispensing within ± 2%. Reverse graduations show volume removed or remaining on all pipettes larger than 1mL. Generous negative graduations provide additional pipetting volume. Yongyue's serological pipettes are made from transparent USP Class VI polystyrene sterilized by gamma irradiation. Each lot is free from pyrogens, DNases, and RNases.Yongyue's plastic serological pipettes are produced under the strictest protocols and offer the highest degree of accuracy.
The pipettes are supplied with an aerosol barrier plug that prevents both liquid and aerosols from contaminating the pipettors.
The serological pipettes are produced from crystal clear polystyrene (PS) and are color coded for easy volume identification. Available in 1mL, 2mL, 5mL, 10mL, 25mL and 50mL sizes.
In addition each Pipette now features:
Crisp and bold easy-to-read graduation marks
Reverse graduations on all volumes
Negative graduations on all volumes
1, 2 and 5mL pipettes feature one-piece construction
10, 25 and 50mL pipettes feature three-piece construction
1 ml Serological Pipette,50 ml Serological Pipette,10 ml Serological Pipette,5 ml Serological Pipette,25 ml Serological Pipette,Serological Pipette 2ml
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyue.com