The paper introduced similar optimal design method for the hydraulic pressure grab bucket with similarstructure and moving, it also showed the computing and the result by a visual way.
介绍了具有结构相似和运动相似的液压抓斗的相似优化设计方法,并对优化计算和结果进行了可视化表达,这种方法可以缩短系列产品的设计周期,提高产品设计信息的可重用性及设计结果的可视性。
The function and basic principle of underground diaphragm wall hydraulic grab control system were analyzed.
分析了地下连续墙液压抓斗纠偏控制系统的功能及基本工作原理,利用功率键合图理论建立了该系统的键合图模型。
DEVELOPMENT AND APPLICATION NEW MODEL CENTRE-ROTARY SHAFT MUCKER
新型中心回转式抓岩机的研制与应用
The climber snatched at the rock, but missed.
攀登者抓信那导体岩石，便没抓到。
He manages to hang on to a piece of rock protrude from the cliff face.
他设法抓住悬崖表面向外伸出的岩石。
The climber had only a precarious hold on the slippery rock.
爬山者不牢靠地抓住了光滑的岩石。
He managed to hang on to a piece of rock protrude from the cliff face
他设法抓住悬崖表面向外伸出的岩石
He managed to hang on to a piece of rock protruding from the cliff face.
他设法抓住悬崖表面向外伸出的岩石.
The climbers had difficulty getting a/any purchase on the rock face.
攀登者很难抓住岩石表面的什麽东西.
He held on (to the rock) to stop himself slipping.
他紧紧抓住（岩石）以免自己往下滑.
A mechanical device for gripping an object.
抓取装置抓东西的一种机械装置
He grasped at the chance to study English.
他抓住机会学英语。
electric overhead travelling grab crane
桥式电动抓斗起重机
You should have jumped at such a good chance. How could you let it slip through your fingers?
这样的好机会,你应该抓
ship unloader with rope trolley
绳索小车抓斗卸船机
catch at an idea [opportunity]
采纳意见[抓住机会]
double-beam bridge type grab crane
双架桥式抓斗起重机
"Seizing the opportunity, deepening the reform,"
抓住机遇,深化改革,
He grabbed at the opportunity of going abroad.
他抓住了出国的机会。
We should seize every opportunity and make timely policy decisions.
机会要抓住，决策要及时，