The loom is controlled by a system of stiff punch cards and hooks.
织布机的控制装置由硬打孔卡和吊钩组成。
2
Further complication - lower immune system, bacterial infection, stiff joints, arthritis, lower productivity, and lower nutritional status of their family.
进一步恶化-降低免疫系统，细菌传染，僵硬的关节，关节炎，更低的生产力，和家庭的营养状态降低。
3
For soft beam-stiff half space system, wave speeds in beams are also critical velocities.