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- Flow checks shall be installed on forced hot water heating systems where indicated on the plans to provide positive gravity shutoff when circulator is not running. 对于压力热水加热系统，如果当循环器停止运行需要纯重力关断时，就需要安装流量止回阀。
- Series 2000 Two-Way Flow Checks are designed to provide positive gravity shutoff when circulator is not running. These checks are easily opened for gravity circulation. 系列2000双通止回阀专用于在循环装置停止运行时提供纯重力关断功能。用于重力循环时，这些止回阀很容易开启。
- The total trends of regional gravity field change show a positive gravity change between Qicun and Tancheng depressed area, and a negative change in Mengyin uplifted area. 区域重力场总的趋势变化为齐村至郯城坳陷区-带重力正值变化，蒙阴隆起区-带重力负值变化。
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- We are fully aware of the gravity of the situation. 我们十分清楚形势的严峻性。
- Moon's weak gravity let the gasses slip away into space. 月球的微弱引力允许气体逃到太空里去。
- Jupiter, with august gravity, sitting in the midst. 朱庇特威风凛凛地坐在当中。
- The stone rolled down the hill by gravity. 石头在重力作用下向山下滚去。
- Her behaviour was a positive outrage. 她的行为残暴到了极点。
- What is the force of gravity at sea level? 海平面的地球引力多大?
- He could hardly keep his gravity. 他忍不住要笑出来。
- She does not know the gravity of her illness. 她不知道自己病情严重。
- I'm positive she told us to meet at noon. 我肯定她是告诉我们在中午见面。
- This charge is a positive charge. 这个电荷是正电荷。
- The force of gravity pulls things towards the earth's centre. 地心吸力把物体吸向地心。
- She shows a very positive attitude to her work. 她工作态度非常积极。
- Can you be positive about what you hear? 你对听到的话有把握吗？
- He has a positive attitude towards life. 他对生活持有积极的态度。
- He doesn't seem to understand the gravity of the situation. 他似乎没有意识到形势的严重性。
- The number of positive numbers is infinite. 正数的数目是无穷的。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
