Abstract: The present disclosure provides a chassis assembly and a vehicle. The chassis component includes: a chassis provided with a plurality of mounting positions and configured to install a battery module; a quick-release device through which the battery module is installed on the mounting positions, wherein the quick-release device is controlled by a control system; and a voltage electrical connecting assembly electrically connected to the battery module, wherein the voltage electrical connecting assembly is controlled by the control system. The vehicle includes the chassis assembly.

Abstract: A particle storage tube (100) used for implanting microparticles into a body in cooperation with a puncture needle (500), and comprising an accommodation portion (1) and a drug delivery portion (2). The accommodation portion (1) is an elongated hollow tube having a channel (10) used to accommodate microparticles (4). One end of the accommodation portion (1) is connected to the drug delivery portion (2), and the other end of the accommodation portion (1) is an open part (11) used to discharge the microparticles out of the particle storage tube (100). The inner diameter of the channel (10) is 1.0-1.8 times the inner diameter of a lumen (502) of the puncture needle (500). An inner chamber (20) of the drug delivery portion (2) is in communication with the channel (10), and is used for delivering liquid medicine (200) to the channel (10).

Abstract: The present disclosure relates to a field of compounds, and more particularly, a stable composition including angiotensin II, a preparation method, and an application method thereof. The composition may include: the angiotensin II; and an excipient, including one or more substances selected from a sugar, an alcohol, a polymer, a surfactant, or an amino acid. The present disclosure may be used for the stable composition including the angiotensin II with high stability, and may be stored under room temperature for more than two years, which solves a problem that the poor stability of the angiotensin II requires cold chain transportation and storage, thereby greatly improving the security and effectiveness of the medicine.