(1) Screw diameter --- the outer diameter of the screw (mm);
(2) the effective length of the screw --- the length of the screw part on the screw (mm), often expressed in L;
(3) L / D ratio of screw
(4) Screw compression ratio V2 / V1 ---- the ratio of the first screw groove volume (V2) of the screw feeding section to the last screw groove volume of the metering section (V1);
(5) Injection stroke --- the maximum distance that the screw moves, and the maximum distance (cm) when the screw moves backward;
(6) Theoretical injection volume-the product of the cross-sectional area of the head of the screw (or plug) and the maximum injection stroke (cm3);
（7） Injection volume ---- the maximum weight (g) of the PS (or screw) in order to inject PS;
(8) Injection pressure-the maximum pressure (N / m2) of pre-melted material at the head of the screw (or plug) during injection;
(9) Injection speed-the maximum speed (mm / s) of the screw (or plug) during injection;
(10) Injection time --- the minimum time for the screw (or plug) to complete the injection stroke during injection;
(11) Injection rate-the theoretical volume of injection per unit time: the cross-sectional area of the screw (or plug) multiplied by the maximum speed of the screw (or plug);
(12) Rotating speed of the screw ----- When the material is plasticized, the lowest maximum rotating speed range of the screw;
(13) Plasticizing capacity --- the maximum weight of plasticizable material per unit time (kg / h);
(14) Screw torque-the maximum torque (N / m) of screw drive when the material is plasticized;
(15) Screw driving power-the maximum power of screw driving (kw) when the material is plasticized;
(16) Recovery rate: another expression of plasticizing ability: heating with PS, above 210 degrees, with 50% of the maximum injection stroke, continuous air injection 10 times, the measured total weight divided by the total screw rotation time , Whose quotient is the response rate;
(17) Nozzle contact --- the maximum contact force between the nozzle and the mold casing (or the thrust of the injection seat kN);
(18) Nozzle extension --- the length of the mold mounting plane (mm) when the nozzle extends out of the front template;
(19) Barrel heating power --- the total power of barrel heating.