Abstract: The present invention relates to a CAD collaborative design system, for storing CAD files according to a timeline, and that facilitates restoration and review of versions created, modified, and updated at different times. The system stores the CAD files by means of summary files and incremental databases, thereby reducing data transmission volume, ensuring accuracy of file restoration, and improving the file management efficiency of the entire CAD system.

Abstract: The present invention relates to a CAD collaborative design system, for storing CAD files according to a timeline, and that facilitates restoration and review of versions created, modified, and updated at different times. The system stores the CAD files by means of summary files and incremental databases, thereby reducing data transmission volume, ensuring accuracy of file restoration, and improving the file management efficiency of the entire CAD system.

Abstract: The present invention discloses a method and a device for selecting an entity in a drawing, wherein the method includes that a hooked preview program corresponding to a functional instruction is invoked after the functional instruction is inputted into a Computer Aided Design (CAD) system; a pickup point in a drawing is selected; an entity in a predetermined range is filtered around the pickup point to obtain a preselected entity; the preselected entity is processed via the hooked preview program so as to pre-display a result of processing the preselected entity by the inputted instruction. An effect of a selected entity processed by a control instruction can be previewed according to the present invention, thus avoiding repeated selections of a graphic entity by a user to further improve working efficiency.

Abstract: The present invention discloses a method and a device for selecting an entity in a drawing, wherein the method includes that a hooked preview program corresponding to a functional instruction is invoked after the functional instruction is inputted into a Computer Aided Design (CAD) system; a pickup point in a drawing is selected; an entity in a predetermined range is filtered around the pickup point to obtain a preselected entity; the preselected entity is processed via the hooked preview program so as to pre-display a result of processing the preselected entity by the inputted instruction. An effect of a selected entity processed by a control instruction can be previewed according to the present invention, thus avoiding repeated selections of a graphic entity by a user to further improve working efficiency.

Abstract: An alloy and a gas turbine engine component comprising an alloy are presented, with the alloy comprising: palladium, in an amount ranging from about 1 atomic percent to about 41 atomic percent; platinum, in an amount that is dependent upon the amount of palladium, such that a. for the amount of palladium ranging from about 1 atomic percent to about 14 atomic percent, the platinum is present up to about an amount defined by the formula (40+X) atomic percent, wherein X is the amount in atomic percent of the palladium, and b. for the amount of palladium ranging from about 15 atomic percent up to about 41 atomic percent, the platinum is present in an amount up to about 54 atomic percent; and the balance comprising rhodium, wherein the rhodium is present in an amount of at least 24 atomic percent; wherein the alloy comprises a microstructure that is essentially free of L12-structured phase at a temperature greater than about 1000° C.

Abstract: An alloy and a gas turbine engine component comprising an alloy, the alloy comprising rhodium, platinum, and palladium, wherein the alloy comprises a microstructure that is essentially free of L12-structured phase at a temperature greater than about 1000° C.