Air or gas cylinder actuators include single or double acting, fail open or closed by mechanical spring or pneumatic force. They can be manufactured to accommodate any length stroke.
空气或燃气缸体执行机构包括单动或双动，由机械弹簧或气动力实现故障开启或关闭等各种类型。
"My parents said if I fail to have a boyfriend by Spring Festival, I had better not come home, " said Ms. Zhou.
我爸妈说，如果春节不带回男朋友，最好不要回家了。
Every year, without fail, the snow eventually melted, the sun warmed the earth, and the buds of spring burst into green.
但每一年，从未爽约，积雪最终融化，太阳使大地回暖，春天的嫩芽吐出新绿。
Every year, without fail, the snow eventually melted, the sun warmed the earth, and the buds of spring burst into green.
但每一年，从未爽约，积雪最终融化，太阳使大地回暖，春天的嫩芽吐出新绿。
应用推荐