This standard covers the requirements for primers to be used in conjunction with solvent cement for the chemical fusion of PVC pipe and fitting joints.
这个标准涵盖采用液状粘固剂进行底漆连接的要求,适用于PV C管道和连接件连接化学熔化。
But for the cement stabilized granular base material intensity standard still has some weakness.
但对水泥稳定粒料基层材料的强度标准仍然存在着认识上的不足。
Conclusion. The larger diameter screws were equivocal or significantly more resilient than the cement augmented standard diameter screws at the strongest of the insertion angles for all values.
结论:使用大直径螺钉仍存在争议,但它较骨水泥强化标准直径螺钉更具有弹性,在所有植入角度具有最大强度。
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