noncumulative letter of credit

this paper presents a "shaft level" restrainer and studies its limit theory and the influence on the dynamic response of substructure of isolated bridge by numerical calculation.

本文设计了一种铰杆式限位装置并对其进行研究，用数值计算对其限位原理及对下部结构的动力响应进行分析。

a new type of organic restrainer rc is introduced for separation of pyrite from chalcopyrite.

研究了新型有机抑制剂RC在黄铜矿和黄铁矿浮选分离中的作用。

to reasonably design the girder falling restrainer, the nonlinear seismic response of the restrainer was investigated considering the failure process of the bearings.

为了合理设计防止落梁装置，应用考虑支座破坏影响的非线性动力计算方法研究了防止落梁装置的地震响应。

the finite element model considering the nonlinearity of the supports and restrainer and pier is established to study the nonlinear seismic response of the bridge structure.

建立了可以综合考虑支座非线性、限位装置接触及材料非线性、墩身弹塑性的桥梁结构有限元模型。

Where a restrainer is to be provided at columns or piers, the restrainer of each span may be attached to the column or pier rather than to interconnecting adjacent spans.

如果约束装置要设在桥柱或桥墩处，则每跨的约束装置可安装在该桥柱或桥墩上，而不是与相邻两跨互连。

By using orthogonal experimental approach, a new restrainer DY-1 is developed.

通过正交试验设计方法研制了DY-1新型酸洗缓蚀剂。

Experiment on Application of wx-ⅰ pickling restrainer

WX-Ⅰ型酸洗缓抑剂的应用试验

development and research of coal dust restrainer

煤尘抑尘剂的开发与研究