1. Mechanical seals of pump—purpose, packaged ship pump—purpose, packaged chemical pump—purpose, dual—end faces, corrugated tube purpose and packaged magnetic fluid. 泵用机械密封：集装式舰船泵用机械密封；化工泵用集装式机械密封；双端面机械密封，波纹管机械密封；磁流体集装式密封。
2. Mechanical seals of pump—purpose, packaged ship pump—purpose, packaged chemical pump—purpose, dual—end faces, corrugated tube purpose and packaged magnetic fluid. 泵用机械密封：集装式舰船泵用机械密封；化工泵用集装式机械密封；双端面机械密封，波纹管机械密封；磁流体集装式密封。
3. The proper handshake is brief, but there should be firmness and warmth in the clasp. 正确的握手要迅捷，但是在握手的瞬间应有力度并且充满热情。
4. "Your son, " he wrote, "gives promise of becoming an officer, who will make his name by his industry, firmness, and conscientiousness. “令郎，”他写道，“因为他兢兢业业、立场坚定、勤勤恳恳，有希望当上一名与众不同的军官。
5. Love asks faith , and faith asks firmness . 爱情要求忠诚，忠诚要求坚定。
网络释义
limited-purpose computer single-purpose computer special purpose computer 专用计算机;
all-purpose computer general computer general purpose computer multi-purpose computer 通用计算机;
all-purpose computer general computer general purpose computer multi-purpose computer 通用计算机;
limited-purpose computer single-purpose computer special purpose computer 专用计算机;
limited-purpose computer single-purpose computer special purpose computer 专用计算机;
