护木位于枪械前端，用以保护射手免于直接接触发射时可能非常热的枪管。
因此，护木的长度将部分取决于你气管道系统长度。
So the length of handguard will partly depend on the gas tube system you have.
根据6.7.6项进行检测时，当锁点方向的安全栓全部弹出并且完全被锁住时，将得到L1前护木的最小投影。
When measured in accordance with 6.7.6, the deadbolt when fully thrown in the locking direction and detained, shall have a minimum projection to the forend of L1 (see Figure 1 and Table 4).
这些替代品包括木糖醇，欧盟委员会早已经允许它作为口香糖中的护牙成分。
These substitutes include xylitol, which the European commission has allowed to market itself as a "tooth friendly" ingredient in chewing gum.
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