One embodiment of the present invention provides a system that facilitates aligning a first signal with a second signal in a manner that optimizes a correlation between the first signal and the second signal. 10 \u03bcgmL, and when the IC50 is 10 \u03bcgmL, 6,6\u2032-bis-\u03b1,\u03b1-D-trehalose has no cytotoxicity, shows high-selectivity anti-tumor invasion activity and can be used for preparing medicaments for preventing and treating invasion and metastasis of colon cancer and the like. The proposed method includes providing a tenon and a holder with a groove corresponding to the tenon; and utilizing the tenon to wedge the uncovered conducting portion of the flexible circuitry component and a connecting region of the FPC in the groove of the holder to cause that the uncovered conducting portion contacts the connecting region. To insert the ExpressCard into the slot of the card storage space, the right corner of the right upper level lower face portion of the card is inserted into the card storage space and the front end of the right stepped portion of the card is guided along the inclined line portions. The composite structure is characterized by at least one of a substrate binder concentration of at least 2 percents by weight, interlayer thickness less than 20 microns, a homogenous interlayer made substantially of crystalline chromium nitride, a low to null binder concentration in the interlayer, and a high co-adhesion of the diamond film to the interlayer and the interlayer to the substrate.